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Round-robin

A round-robin tournament is a competition format in which each participant competes against every other participant, typically once in a single round-robin or twice (once home and once away) in a double round-robin, to determine relative strengths through direct matchups.^[1]^[2] This structure ensures fairness by eliminating byes and seeding biases inherent in elimination formats, requiring n(n-1)/2 games for n participants in the single variant.^[3] Commonly employed in sports such as soccer leagues, chess events, and tennis qualifiers, as well as non-sporting contests like debates or elections, it provides comprehensive data for accurate rankings but scales poorly for large fields due to the quadratic increase in fixtures.^[4]^[5] The term derives from historical practices of cyclic arrangements, evolving from 17th-century naval petitions signed circularly to obscure leadership to modern scheduling tools that prioritize equitable rotation.^[6] While praised for its empirical rigor in revealing true hierarchies—unlike knockout systems that can crown untested winners—it often incorporates tiebreakers like head-to-head results or point differentials to resolve deadlocks among tied entrants.^[7]

Etymology and General Concept

Historical Origins

The term "round-robin" emerged in English during the late 17th century, denoting a petition or document signed by multiple parties in a circular pattern to conceal the sequence of signatures and avoid pinpointing the instigator, thereby distributing perceived leadership and mitigating risks of targeted retaliation. This method fostered anonymity and collective accountability, particularly in group grievances where identifying a primary signer could invite punishment.^[6] The earliest documented usage dates to 1698, establishing it as a formalized practice for equitable, non-hierarchical endorsement.^[6] By the early 18th century, nautical records provide concrete examples, such as a 1730 entry in The Weekly Journal describing sailors' petitions where names were inscribed vertically along the left margin and curved across the base, evoking the rounded body and elongated tail of a robin bird—a visual cue reinforcing the circular design. This adaptation among seamen highlighted the term's utility in high-stakes environments demanding consensus without precedence, as the format ensured no signature appeared at the "head."^[8] Historical lexicographical analysis traces potential roots to French ruban rond ("round ribbon"), suggesting petitions inscribed on looped ribbons for similar anonymity, though primary evidence remains tied to English maritime and civilian documents rather than direct Gallic transmission.^[9] The practice's emphasis on rotational signing to achieve fairness in group actions provided an empirical foundation for later interpretations of "round-robin" as a mechanism of balanced alternation, distinct from any contemporaneous gambling connotations where "robin" might evoke shared stakes—those associations postdate the petitionary origin and lack verifiable linkage to the term's inception. Archival petitions from this era, including those by aggrieved workers or military personnel, demonstrate the causal role of anonymity in enabling collective dissent, underscoring the method's pragmatic evolution from defensive tool to symbol of impartial rotation.^[9]

Core Principles

The round-robin mechanism functions as a deterministic scheduling protocol wherein a fixed sequence of participants or tasks is maintained in a circular queue, with each receiving an equal, predefined quantum of resource access or turn before advancing to the next, looping indefinitely until all demands are satisfied.^[10] This cyclic allocation inherently enforces turn-taking, mathematically distributing opportunities proportionally to the number of cycles completed, thereby precluding indefinite dominance by any entity under uniform quanta.^[11] In principle, the approach yields equitable resource division by design, as each participant advances through the queue without preferential interruption, contrasting with priority schemes that may indefinitely defer lower-ranked entities.^[12] It remains starvation-free in idealized settings, where the exhaustive cycling guarantees eventual service for all queued items regardless of arrival order or duration, provided quanta are finite and non-zero.^[12] However, the enforced transitions introduce verifiable switching overheads, such as re-establishment costs in state preservation and restoration, which accumulate proportionally to the frequency of quanta exhaustion.^[13] Empirical analyses reveal that while round-robin upholds fairness in homogeneous workloads—yielding bounded wait times scaling linearly with queue length and quantum size—it exhibits delays for short-duration tasks amid heterogeneous lengths, as long tasks fragment quanta without completing, extending overall cycle times relative to completion-time-optimal alternatives.^[11] This stems from the causal interplay of fixed quanta and variable service requirements, where equity trades against throughput in non-uniform distributions, though the protocol's simplicity facilitates predictable behavior absent adaptive modifications.^[14]

Applications in Computing

Process and CPU Scheduling

In operating systems, round-robin scheduling is a preemptive CPU scheduling algorithm that allocates a fixed time slice, known as a time quantum typically ranging from 10 to 100 milliseconds, to each ready process in a cyclic manner.^[15]^[16] Processes are placed in a ready queue and executed in first-come, first-served order within each cycle; if a process exhausts its quantum without completing, it is preempted and requeued at the end, allowing the next process to run.^[15] This mechanism originated in the 1960s amid early multiprogramming and time-sharing systems designed to support interactive computing by preventing any single process from monopolizing the CPU.^[17] The algorithm's performance is analyzed through metrics such as turnaround time (completion time minus arrival time), waiting time (turnaround time minus burst time), and response time (time from first execution to completion of response).^[18] For a set of n processes arriving simultaneously with varying burst times much larger than the quantum, turnaround times are computed via a Gantt chart simulating the execution cycles, where each process incurs waiting for the quanta of preceding processes in each round.^[15] An approximation for average waiting time in balanced workloads is ((n-1) × quantum)/2, assuming uniform distribution across cycles, though exact values require per-process summation of idle quanta; for example, with three processes of bursts 24 ms, 3 ms, and 3 ms under a 4 ms quantum, average turnaround time is 10.33 ms and average waiting time is 6.33 ms.^[15]^[19] Round-robin is implemented in Unix-like kernels, notably via the SCHED_RR policy in Linux for real-time tasks, where threads of equal priority share the CPU in fixed quanta to bound latency.^[20]^[21] This provides starvation-free execution and equitable resource sharing, making it suitable for interactive environments, but empirical evaluations reveal tradeoffs in efficiency.^[15] Critiques highlight excessive context-switching overhead when quanta are short, as each switch incurs costs for saving/restoring process states, potentially reducing CPU utilization below 50% in high-load scenarios with frequent preemptions.^[22]^[23] Additionally, the convoy effect occurs when long-burst processes delay short ones across cycles, inflating average waiting times; simulations demonstrate this leads to suboptimal throughput compared to burst-aware algorithms.^[23]^[24] Comparative studies confirm round-robin's inferiority to shortest-job-first (SJF) or its preemptive variant (shortest-remaining-time-first) in minimizing average turnaround and waiting times for workloads with heterogeneous burst lengths, as SJF mathematically optimizes by prioritizing shorter jobs to reduce cumulative delays—e.g., one analysis of varied bursts showed SJF yielding 20-30% lower average waiting times than round-robin with equivalent fairness constraints absent.^[25]^[26]^[27] Thus, while round-robin prioritizes fairness over raw efficiency, its universality is overstated, with performance degrading in burst-varied environments absent optimizations like dynamic quanta.^[26]

Load Balancing and Networking

In load balancing for networking, round-robin operates by cyclically assigning incoming client requests or packets to a sequence of backend servers or nodes, promoting even distribution under the assumption of identical server capabilities and request durations. This static algorithm forwards each new connection to the next available server in the rotation, without considering real-time metrics such as current load or response latency, thereby aiming to maximize throughput in homogeneous environments while providing inherent redundancy against single-server failures.^[28]^[29] A common implementation is DNS round-robin, where authoritative name servers return multiple IP addresses for a single hostname in a rotating order, distributing resolution queries across servers for basic load spreading and failover resilience; if one server becomes unreachable, traffic shifts to others upon client cache expiration or health-check removal of the failed IP. This approach, lacking active health monitoring in basic setups, enhances availability by avoiding over-reliance on any one endpoint but can result in temporary disruptions if clients cache outdated records.^[30]^[31] Load balancers like HAProxy and nginx integrate round-robin as a core method for proxying HTTP, TCP, or UDP traffic to upstream servers, with nginx defaulting to it for even request apportionment since its 2004 inception and HAProxy supporting it from early versions around 2001 onward, evolving from broader 1990s-era cyclic distribution practices in distributed systems. In these tools, the algorithm cycles through server lists sequentially, improving fault tolerance by isolating failures to a subset of traffic while sustaining aggregate network capacity.^[32]^[29] Despite these benefits, round-robin's disregard for dynamic server states—such as CPU utilization, memory pressure, or varying processing times—causes uneven effective load when servers differ in performance or encounter heterogeneous workloads, leading to hotspots where slower nodes accumulate delays and degrade overall throughput compared to adaptive algorithms like least connections. Analyses of such imbalances demonstrate that round-robin can underperform significantly in non-uniform setups, as it fails to redirect traffic from burdened servers, potentially amplifying latency and reducing resilience under bursty or asymmetric traffic patterns.^[33]^[34]^[35] Cloud providers like AWS employ round-robin in Elastic Load Balancing target groups as the default routing policy, cycling requests across registered instances to bolster availability across availability zones, though this static cycling does not incorporate runtime metrics, limiting its efficacy in environments with fluctuating resource demands or instance heterogeneity.^[36]^[37]

Variants and Optimizations

Weighted round-robin (WRR) scheduling assigns proportional CPU time to processes or queues based on predefined weights, enabling prioritization without complete starvation of lower-weight tasks, unlike uniform round-robin. This variant, refined in post-2000 implementations for networks and load balancers, distributes slices such that a process with weight w_i receives w_i / \sum w of total cycles, improving throughput in heterogeneous workloads as demonstrated in simulations reducing mean response times by up to 20% over static methods.^[38] Dynamic quantum adjustments address fixed-slice inefficiencies by adapting time quanta per process burst predictions or averages, mitigating context-switch overhead in variable loads. For instance, the dynamic round-robin heuristic algorithm (DRRHA), proposed in 2024, computes quanta as the mean of historical slices and remaining burst times, yielding 15-30% lower turnaround times in real-time simulations compared to traditional RR. Similarly, amended dynamic round-robin (ADRR), introduced around 2020 and extended in subsequent works, recalibrates quanta iteratively based on burst estimates, optimizing waiting times in timeshared systems per empirical evaluations on standard datasets.^[13]^[39] Recent advancements include integrations for specialized domains, such as greedy power allocation with RR for wireless 5G traffic, which prioritizes resource assignment to high-demand users while cycling allocations, enhancing spectral efficiency in overloaded MIMO systems by 10-25% in modeled scenarios. A 2023 systematic mapping study cataloged over 100 post-2010 publications on RR optimizations, emphasizing quantum tuning and hybrid adaptations for cloud/edge environments to handle bursty, distributed computing demands.^[40]^[41] These variants empirically reduce starvation and average waiting times in controlled benchmarks, with dynamic adjustments showing causal improvements via fewer preemptions in burst-predictive models. However, simulations reveal ongoing overhead from frequent quantum recomputations—up to 10-15% higher than non-preemptive alternatives in high-variability traces—and limited adoption over ML-driven schedulers in production clouds, where adaptive learning outperforms RR hybrids in dynamic resource prediction without supplanting simpler heuristics entirely.^[42]^[43]

Applications in Tournaments

Format and Mechanics

In a round-robin tournament, each of the n participants competes against every other participant exactly once, corresponding to the edges of a complete graph K_n in graph theory, where vertices represent competitors and edges denote matches.^[44] The total number of matches required is given by the binomial coefficient C(n,2) = n(n-1)/2, which grows quadratically with n, limiting practicality for large participant pools—for instance, 10 teams require 45 games, while 20 demand 190.^[44] In a double round-robin variant, each pair plays twice (often once at each "home" venue), doubling the total to n(n-1).^[45] Scheduling adheres to algorithms ensuring balanced pairings across rounds, such as the circle method: teams are arranged in a fixed circle with one stationary, and others rotate clockwise each round to generate matchups, minimizing repeated opponent proximities or byes in uneven divisions.^[46] This format originated in 19th-century sports like lawn tennis, where it facilitated fair competition among small groups without elimination risks.^[9] Examples include the FIDE Candidates Tournament, an eight-player double round-robin event (14 rounds total) selecting the world chess championship challenger, with matches played under time controls and electronic scoring.^[45] In pickleball, the United States Tennis Association (USTA) employs round-robin formats in flex leagues, grouping 5-8 similarly skilled players into flights for all-play-all matches to determine advancement.^[47] Winners are typically determined by cumulative points (e.g., 1 for a win, 0.5 for a draw), with tiebreakers resolving deadlocks via head-to-head results, game differentials, or specialized scores like the Sonneborn-Berger system in chess, which sums the final scores of defeated opponents (full points), half-points for drawn opponents, and zero for losses, weighted by opponent strength to favor victories over stronger fields.^[48]^[49]

Scheduling Algorithms for Tournaments

The circle method, also known as the rotation or polygon method, is a foundational algorithm for generating round-robin schedules, particularly effective for tournaments with an odd number of teams. Teams are labeled numerically and arranged in a circle, with matchups determined by pairing adjacent teams; subsequent rounds are produced by rotating the positions clockwise while fixing one team or bye. This produces a complete schedule in O(n^2) time for n teams, ensuring balanced rounds without repeated pairings.^[46]^[50] For even numbers of teams, variants of the rotation algorithm adapt by fixing one team in position and rotating the remaining n-1 teams, yielding parallel matchings across n-1 rounds. Berger tables extend this principle for chess and similar events, providing precomputed pairings that minimize player movement between boards—typically no more than one position shift per round—facilitating efficient over-the-board organization for odd participant counts. These methods rely on combinatorial constructions akin to 1-factorizations of the complete graph K_n, where edges represent matches partitioned into perfect matchings per round.^[51]^[52] Advanced scheduling incorporates constraints such as balanced home-away assignments, where each team hosts roughly half its games, or minimizing consecutive home/away patterns to reduce fatigue and travel. Integer programming formulations model this as assigning directions to graph edges under fairness constraints, solvable in polynomial time for small n but requiring heuristics or column generation for large leagues due to exponential search spaces in optimal break minimization. Computational complexity escalates with such restrictions, as naive enumeration is O(n^2) for basic schedules but NP-hard for multi-constraint optimizations like venue-specific breaks.^[53]^[54] Software tools automate these algorithms for practical use, with LeagueLobster's generator handling round-robin fixtures for up to 25 teams via rotation-based methods, incorporating basic constraints like bye distribution since its development in the 2010s. In niche applications, platforms like Battlefy for esports tournaments implement automated round-robin bracketing in the 2020s, grouping participants and generating all-vs-all matchups to streamline administration and minimize manual errors in high-volume events. Similarly, DUPR's integration with pickleball event systems since around 2020 enables algorithmic scheduling tied to ratings, automating fixtures for dynamic player pools while enforcing round-robin fairness in recreational leagues.^[55]^[56]^[57]

Advantages, Limitations, and Variants

Round-robin tournaments provide maximal fairness by ensuring each participant competes against every other, eliminating byes and guaranteeing an equal number of games per entrant, which minimizes luck-based outcomes compared to elimination formats.^[58]^[59] This structure yields more accurate rankings, as multiple matchups reveal relative strengths empirically; for instance, analyses indicate that the format's comprehensive data reduces ranking inversions in unbalanced fields when doubled up.^[60] Participants benefit from extended playtime, enhancing engagement without early exits, particularly in smaller events like quads with four players over three rounds.^[61] However, the format's primary limitation is its quadratic scaling in time and resources: with n entrants, it requires n(n-1)/2 total games, rendering it impractical for large fields, such as beyond 20 teams, where hundreds of matches accumulate and scheduling becomes computationally intensive.^[62] Fatigue and injury risks escalate due to the high volume of contests, especially in physically demanding sports, while reliance on tiebreakers for unresolved standings introduces subjectivity and dependency on external results, undermining decisiveness.^[63] Empirical studies highlight that single-elimination alternatives achieve comparable top-seed identification efficiency with far fewer games, prioritizing speed over exhaustive fairness in resource-constrained scenarios.^[64] Variants address these drawbacks by hybridizing the format; the Swiss system, for example, approximates round-robin equity for large entrant pools by pairing players of similar scores over a fixed number of rounds (typically log n), avoiding full pairwise exhaustion while preserving ranking integrity through progressive matching.^[65] Double round-robin doubles matchups for deeper evaluation in mid-sized leagues, though at doubled cost, whereas combinations like round-robin pools feeding into knockouts balance comprehensiveness with elimination's celerity for playoffs.^[66] Incomplete or abbreviated round-robins further optimize for non-professional settings by selectively reducing fixtures while retaining core fairness.^[62]

Applications in Communication and Collaboration

Techniques for Group Discussions

The round-robin technique in group discussions involves participants taking sequential turns to contribute ideas or responses, typically in a fixed order around the group, to promote equitable participation and mitigate dominance by vocal individuals. This method begins with individual silent ideation to generate initial thoughts, followed by verbal sharing in rotation, ensuring each member speaks without interruption until all have contributed. Originating in facilitation practices, it has been adapted for modern collaborative settings since the 2010s, including digital tools like Mural's templates for remote brainstorming.^[67]^[68] In applications such as agile retrospectives, round-robin facilitates structured reflection by prompting each team member to share feedback on sprints, such as successes or improvements, in turn, which increases involvement from quieter participants compared to unstructured discussions. Similarly, in design sprints popularized by Google Ventures around 2010, it enables small teams to rapidly generate diverse solutions to defined challenges by passing and building on ideas sequentially. These uses address participation biases observed in groups, where dominant speakers can suppress input from others, though direct causal evidence linking the technique to measurably superior decision outcomes remains limited, relying instead on anecdotal improvements in idea generation volume.^[69]^[70]^[71] Key benefits include enhanced idea diversity and reduced groupthink, as the format compels contributions from all, fostering a broader range of perspectives than free-for-all brainstorming. BetterEvaluation describes it as effective for developing ideas in group settings by systematically collecting inputs, which can reveal overlooked themes. However, it may slow discussion pace in time-constrained meetings and constrain spontaneous creative flow, potentially frustrating participants in dynamic ideation phases where interruptions could spark synergies. Variants like popcorn style introduce flexibility by allowing the current speaker to select the next, blending structure with choice to maintain momentum while still curbing dominance, though this risks reverting to informal hierarchies if not moderated.^[71]^[72]

Resource and Lead Distribution

In sales and customer relationship management (CRM) systems, round-robin lead distribution operates by assigning incoming leads to sales representatives in a sequential, cyclic order, ensuring each team member receives an approximately equal share of opportunities without manual intervention.^[73] This method, implemented in tools like Chili Piper since at least 2020, automates routing based on predefined queues, often integrating with calendars to schedule initial meetings or calls.^[73] For instance, after one representative handles a lead, the next in rotation receives the subsequent one, promoting workload equity across teams of varying sizes.^[74] The primary advantage lies in fostering fairness and reducing perceptions of favoritism, which can mitigate team resentment and burnout by preventing any single representative from being overloaded.^[75] Empirical observations from CRM implementations indicate that this even distribution accelerates lead response times, as assignments occur instantly rather than through ad-hoc decisions, potentially improving conversion rates through timely engagement.^[76] However, data from sales operations analyses suggest it lowers rep exhaustion compared to uneven manual allocations, though specific metrics like reduced turnover rates vary by team scale.^[77] Critiques highlight round-robin's oversight of individual capacities, such as varying rep availability, expertise, or current caseloads, which can result in mismatched assignments and operational inefficiencies.^[78] For example, high-performing representatives may receive suboptimal leads, while underperformers handle high-value ones, potentially diluting overall revenue per lead.^[78] Studies and practitioner reports comparing it to weighted variants—where assignments factor in performance metrics or territory expertise—show the latter yielding higher revenue outcomes, as they prioritize skill-based routing over strict equality, with some teams reporting up to 20-30% improvements in close rates though exact figures depend on industry benchmarks.^[79]^[80] Thus, while round-robin suits nascent teams emphasizing equity, mature organizations often hybridize it with capacity checks to balance fairness against performance imperatives.^[77]

Other Uses

Historical Documents and Petitions

The round-robin format for petitions and documents involves arranging signatories' names in a circular manner to obscure the sequence of signing, thereby preventing identification of leaders or initiators who might face reprisals. This technique emerged in the early 17th century, likely derived from the French phrase ruban rond ("round ribbon"), referring to petitions where signatures were affixed circularly on ribbons to conceal hierarchy.^[6] One of the earliest documented examples is the 1621 Round Robin Agreement, a petition signed by 56 Walloon Protestant refugees (Huguenots from present-day Belgium and northern France) seeking permission from English authorities to settle in Virginia. Addressed through Sir Dudley Carleton's letter to Secretary Sir George Calvert on July 19, 1621, the document's circular signatures emphasized collective equality among the signers, who included families like the De la Montagnes, to avoid designating a primary petitioner amid religious persecution in Europe.^[81] The practice gained traction in the 18th century for collective grievances, particularly in maritime contexts where sailors submitted round-robin complaints against captains or officers without revealing instigators, as seen in British naval records of protests over pay, conditions, or discipline.^[9] By this period, round-robin petitions were employed in civilian settings, such as labor disputes or remonstrances to monarchs, where the circular arrangement symbolized unified dissent while mitigating risks to individuals.^[9] Historical accounts note its use in French Huguenot communities and English dissenting groups, underscoring its role in fostering anonymous collective action during eras of authoritarian rule.^[82]

Betting and Gambling Systems

In sports betting, a round-robin wager generates multiple smaller parlays from a group of individual selections, with each parlay comprising every possible combination of two or more picks rather than requiring all selections to win as in a traditional parlay.^[83] This format allows bettors to partially offset losses if one or more selections fail, as payouts from successful subsets can exceed the total stake under certain outcomes, though the overall expected value remains negative due to bookmaker vigorish.^[84] On platforms like FanDuel, selecting three outcomes produces three two-leg parlays and one three-leg parlay, for a total of four wagers, with bettors specifying the stake per parlay or adjusting for "by 2's," "by 3's," or similar subsets to control exposure.^[85] For k selections in a comprehensive round-robin encompassing all combinations from two to k legs, the total number of parlays equals \sum_{i=2}^{k} \binom{k}{i} = 2^k - k - 1, reflecting the power set minus singletons and the empty set; for instance, k=3 yields 4 parlays, while k=6 can produce up to 63 if fully expanded, though platforms cap at around 15-20 parlays for practicality.^[83] This combinatorial structure, rooted in subset enumeration, scales exponentially, increasing total risk as k grows.^[86] Despite claims of variance reduction relative to a single all-in parlay—where one loss voids the entire bet—round-robins amplify exposure by multiplying the stake across numerous correlated wagers, often without commensurate payout scaling, as each parlay's odds compound the house edge of approximately 4-5% per leg into higher effective margins (e.g., a two-leg parlay at -110 odds each yields about -104 equivalent vig).^[84] ^[87] Empirical outcomes favor the house, with parlay win rates historically below 25% for two-leg bets and far lower for longer combinations, debunking notions of round-robins as a value-enhancing strategy; instead, they function as a convenience for spreading risk that still erodes bankroll over repeated plays due to persistent negative expectancy.^[88] Long-term data from sportsbooks indicate round-robin volumes contribute to hold percentages exceeding 10% on parlay products, as bettors overestimate subset success probabilities amid outcome dependencies.^[89]

References

[1]
ROUND ROBIN | definition in the Cambridge English Dictionary
a competition in which everyone competes at least once against each other competitor: a round-robin tennis tournament.
[2]
ROUND-ROBIN definition in American English - Collins Dictionary
A round-robin is a sports competition in which each player or team plays against every other player or team. They beat Canada 4-1 in their last round-robin ...
[3]
Printable Round Robin Tournament Brackets
A round robin tournament is a type of tournament in which each participant plays every other participant the same amount of times. If you have a large number of ...
[4]
How To Run a Round Robin Tournament | TeamLinkt
May 27, 2025 · A round robin tournament is a format in which each participant competes against every other participant at least once. Unlike single – or double ...
[5]
The Round-Robin Tournament System: Rules, Scoring, and ...
Nov 18, 2024 · The round-robin tournament format is one of the fairest and most comprehensive ways to determine the best player or team in a competitive ...
[6]
ROUND-ROBIN Definition & Meaning - Merriam-Webster
Oct 13, 2025 · The meaning of ROUND-ROBIN is a written petition, memorial, or protest to which the signatures are affixed in a circle so as not to indicate ...
[7]
What Is a Round Robin and How to Run It? - DUPR
May 8, 2025 · A Round Robin is a tournament format where every player or team plays against every other player or team in their group.
[8]
History of Round Robin - Idiom Origins
Before this, as recorded in The Weekly Journal dated January 1730, “A round robin is a name given by seamen to an instrument on which they sign their names ...Missing: earliest | Show results with:earliest
[9]
Round Robin - Meaning & Origin Of The Phrase
It may be that this derives from the French 'rond rouban', which was a similar form of petition, in which the names were written on a circle of ribbon.
[10]
Round Robin Scheduling - an overview | ScienceDirect Topics
Round-robin scheduling is a CPU scheduling algorithm that allocates each task an equal share of the CPU time. Tasks are placed in a circular queue, and when a ...Missing: foundation | Show results with:foundation
[11]
[PDF] The efficiency-fairness balance of Round Robin scheduling
The Round Robin algorithm splits the processor evenly among all of live jobs in the system. Although in practice only one job is allocated to a (single core) ...Missing: principles | Show results with:principles
[12]
The efficiency-fairness balance of Round Robin scheduling
Other than meeting this intuitive definition of fairness, RR has other advantages, such as being starvation-free and incentivizing jobs to reveal their true ...
[13]
An enhanced round robin using dynamic time quantum for real-time ...
Aug 15, 2024 · A small QT results in a higher Context Switching (CS) leading to additional overhead and reduced CPU efficiency whereas a large QT may increase ...Missing: equity | Show results with:equity
[14]
(PDF) Improved Round Robin Policy: A Mathematical Approach
This work attempts to mathematically formulize the computation of waiting time of any process in a static n-process, CPU-bound round robin scheme.Missing: core principles foundation
[15]
Round Robin Scheduling in Operating System - GeeksforGeeks
Aug 25, 2025 · Round Robin Scheduling manages CPU execution time by rotating through processes, allocating each a fixed time slice, ensuring equal opportunity.
[16]
Round-Robin Scheduling Algorithm - Medium
Aug 1, 2023 · In the RR scheduling algorithm, no process is allocated the CPU for more than one time slice in a row (unless it is the only runnable process).Missing: foundation | Show results with:foundation
[17]
What is round-robin scheduling, and how is it used in modern ...
Dec 28, 2022 · Round-robin scheduling means that every process gets a slice of processor time, then it is stopped and the next process in the list is resumed.
[18]
How To Compute the Turnaround Time? - Baeldung
Jul 6, 2024 · Turnaround time (TAT) is calculated as TAT = CompletionTime - ArrivalTime, or TAT = BurstTime + WaitTime.
[19]
How to calculate average waiting time of Round robin scheduling?
Jul 25, 2012 · Average waiting time can be calculated using a Gantt chart, or as (schedule length - sum of execution time) / number of processes.How to calculate average turnaround time - Round Robin and FIFO ...Calculating turnaround time for SJF and Round Robin - Stack OverflowMore results from stackoverflow.com
[20]
4.2. CPU Scheduling | Red Hat Enterprise Linux | 6
A round-robin variant of the SCHED_FIFO policy. SCHED_RR threads are also given a fixed priority between 1 and 99. However, threads with the same priority are ...
[21]
Linux kernel scheduler
SCHED_RR is a scheduler where the 'RR' stands for Round Robin. It is similar to SCHED_FIFO, but allows multiple tasks to have the same priority. With ...
[22]
Advantages and Disadvantages of various CPU scheduling algorithms
Jul 12, 2025 · Setting the quantum too short increases the overhead and lowers the CPU efficiency, but setting it too long may cause a poor response to short ...
[23]
Round Robin Scheduling Algorithm - DataFlair
Disadvantages of Round Robin Algorithm · Low slicing time reduces processor output. · Spends more time on context switching. · Performance depends on time quantum.
[24]
Scheduling Algorithms (FCFS, SJF, RR, Priority) - NamasteDev Blogs
Jul 31, 2025 · Convoy Effect: Short processes can get stuck waiting behind long ones, which leads to poor average wait times. Throughput: Not optimal for time- ...
[25]
Difference between Shortest Job First (SJF) and Round-Robin (RR ...
Jul 12, 2025 · Shortest Job First (SJF) Scheduling Algorithm is based on the burst time of the process. The processes are put into the ready queue based on their burst times.
[26]
Comparison of CPU Scheduling Algorithms: FCFS, SJF, SRTF ...
The scheduling algorithms discussed are, first come first served, shortest job first, shortest remaining time first, priority based, round robin, multilevel ...
[27]
Comparative Study: Preemptive Shortest Job First and Round Robin ...
In this journal we wil discuss comparative study between preemptive shortest job first and round robin algorithms.
[28]
What is Round Robin Load Balancing? Definition & FAQs | VMware
Learn the definition of Round Robin Load Balancing and get answers to FAQs regarding: What is Round Robin Load Balancing, How Does Round Robin Load ...
[29]
HTTP Load Balancing | NGINX Documentation
Round Robin – Requests are distributed evenly across the servers, with server weights taken into consideration. This method is used by default; there is no ...Proxy HTTP Traffic to a Group... · Choosing a Load Balancing... · Server Weights
[30]
Types of load balancing algorithms - Cloudflare
Round robin: Round robin load balancing distributes traffic to a list of servers in rotation using the Domain Name System (DNS). An authoritative nameserver ...
[31]
Configure DNS Failover with Round Robin - DigiCert Knowledge Base
Oct 21, 2023 · A DNS Failover configuration with a round-robin will split traffic evenly between hosts unless one of the hosts is offline in which case it would be removed ...
[32]
The History of HAProxy
Nov 8, 2019 · So eventually, HAProxy had to learn about load balancing, which meant adding a simple round-robin scheduler, simple health checks, and cookie ...
[33]
Why Are We Still Using Round-robin Load Balancers? - Middleware.io
Aug 12, 2025 · Round robin load balancing is a load balancing technique that cyclically forwards client requests via a group of servers to effectively balance the server load.How does round robin load... · Weighted load balancing vs...
[34]
Load Balancing: Round Robin May Not Be the Right Choice
Nov 13, 2019 · Based on our experience, we believe Round Robin may not be an effective load balancing algorithm, because it doesn't equally distribute traffic among all nodes.Missing: ignores criticisms
[35]
Comparing Load Balancing Algorithms | JSCAPE
In comparing load balancing algorithms, Round Robin distributes requests cyclically and suits servers with identical specs. Weighted Round Robin factors in ...Round Robin · Least Connections · Get Started<|separator|>
[36]
Target groups for your Application Load Balancers
The routing algorithm determines how the load balancer selects targets when routing requests. The value is round_robin , least_outstanding_requests , or ...
[37]
How Elastic Load Balancing works - AWS Documentation
Clients send requests, and Amazon Route 53 responds to each request with the IP address of one of the load balancer nodes. Based on the round robin routing ...Availability Zones and load... · Request routing · Load balancer scheme
[38]
An Advanced Weighted Round Robin Scheduling Algorithm
In this article the probabilistic Advanced Weighted Round Robin (AWRR) algorithm is introduced. Results show that the proposed algorithm can reduce both Mean ...2 Related Work · 4 System Model And Results · 4.2 Results<|separator|>
[39]
Improving Round Robin Scheduling with Dynamic Time Quantum ...
Aug 7, 2025 · In this paper, a new CPU scheduling algorithm is proposed named as Amended Dynamic Round Robin (ADRR) based on CPU burst time. The primary goal ...
[40]
Greedy Based Round Robin scheduling solution for Data Traffic ...
Aug 23, 2025 · Development of Greedy Power Allocation Round Robin Scheduling for 5.5G Traffic Management. Conference Paper. Oct 2021.
[41]
New developments in round robin algorithms and their applications
Oct 3, 2025 · This article provides a systematic mapping studythat identifies the state-of-the-art in the research of the round robin algorithms to ...
[42]
Performance Evaluation of Dynamic Round Robin Algorithms for ...
In this paper, we present a comparative study of four different Round Robin algorithms namely: Adaptive Round Robin Algorithm, Best Time Quantum Round Robin CPU ...Missing: ML | Show results with:ML
[43]
Assessing FIFO and Round Robin Scheduling: Effects on Data ...
Sep 24, 2024 · This paper conducts a comparative study over FIFO and RR scheduling policies with the application of real-time machine learning training ...
[44]
13.5 Math and Sports - Contemporary Mathematics | OpenStax
Mar 22, 2023 · FORMULA. The number of games in a single round-robin tournament with n n teams is n ( n - 1 ) / 2 n ( n - 1 ) / 2 .
[45]
[PDF] Regulations for the FIDE Candidates Tournament 2024 - Toronto, 3
The 8 players play a double round robin tournament (14 rounds). 4. 2. Time control and default time. 4. 2. 1. The games are played using the electronic clocks ...
[46]
The Power of the Rotation Algorithm in Round Robin Tournament
Sep 15, 2024 · The Round Robin Schedule: Using the Rotation Algorithm · Step 1: Fix One Team in Position · Step 2: Arrange the Remaining Teams in a Circle · Step ...
[47]
Round Robin Format - USTA Customer Care
Sep 23, 2025 · Round Robins are the classic Flex League format. In this format, players are grouped into "flights" of 5-8 players with similar skill levels ...
[48]
How do ties in tournaments work? | Chess.com Help Center
Example of Sonneborn-Berger tie-break. A player's Sonneborn-Berger score is calculated by adding together the score points of the players they have defeated ...
[49]
FIDE Handbook 07. Tie-Break Regulations (effective till 31 August ...
9.3 Sonneborn-Berger for Team Tournaments is the sum of the products of the scores made by each opposing team and the score made against that team. Example: In ...
[50]
Application of circle method in scheduling Round-Robin ...
Circle Method or Polygon method is broadly utilized in the game sector to produce timetable for this round-robin competition.
[51]
Structure, Benefits & Challenges | Round-Robin Chess Tournament
Nov 5, 2024 · This involves arranging the players in a circle and rotating the pairings each round to ensure that everyone plays each other. This method is ...<|separator|>
[52]
Berger Tables | PDF | Sports & Recreation - Scribd
Rating 5.0 (2) This document provides instructions and tables for pairing players in round robin tournaments with an odd number of participants.<|separator|>
[53]
Integer programming models for round robin tournaments
Oct 1, 2023 · We investigate three integer programming formulations for scheduling a round robin tournament, one of which we call the matching formulation.
[54]
[PDF] Integer and Constraint Programming Approaches for Round Robin ...
Home / Away restrictions. Each team has a home venue, and each game must be assigned to a venue. There are additional constraints on such things as the ...
[55]
Round Robin Generator - LeagueLobster
Rating 4.8 (146) Round robin is a competition in which each team plays every other team. For example, in the English Premier League, each team plays every other team twice, ...
[56]
What is a Round Robin bracket? | Battlefy Help Center
A round robin bracket is one where each participant plays all the other participants in turn. For example, if you have a Round Robin bracket with 4 teams.
[57]
DUPR - The World's Most Accurate Pickleball Rating
Join the fastest growing pickleball platform ... DUPR syncs with all major event and club platforms. Results are sent directly to DUPR to keep your rating ...2025-26 Collegiate Pickleball ...The 2025 Collegiate Pickleball ...The 2024 DUPR Collegiate ...
[58]
How Round-Robin Ensures Equal Opportunities for All Teams
Aug 29, 2023 · Definition and Basics of Round-Robin. A round-robin is a competition format in which each participant plays against every other participant ...
[59]
Round Robin Tournament Brackets - R2sports
Advantages: Round robin tournament brackets are often thought of as one of the fairest ways to determine a champion in a division since all participants ...
[60]
The efficacy of tournament designs - ScienceDirect.com
The gain from playing two round-robin championships instead of one is higher when the competition is less balanced: the number of inversions is reduced by ...
[61]
https://heliospickleball.com/blogs/news/what-is-round-robin-tournament-in-pickleball
[62]
Beyond leagues: A single incomplete round robin tournament for ...
May 16, 2025 · Hence, round robin tournaments become impractical when the number of teams is large, as is usually the case in non-professional competitions. To ...Missing: limitations | Show results with:limitations
[63]
The unacceptable flaws of the round robin format | HLTV.org
This inherent dependence on results other than your own and the lack of proper tiebreakers make the round robin a shoddy format at best, and those are just two ...
[64]
(PDF) The efficacy of tournament designs - ResearchGate
Oct 6, 2025 · We consider various formats including knockout tournaments, multi-stage championships consisting of round-robin groups followed by single ...
[65]
Tournament formats: Swiss-system - FACEIT
Jan 17, 2025 · Swiss is also known as the expedited Round-robin, which allows a winner to be determined out of a large pool of participants without needing ...
[66]
A Round-Robin Chess Tournament Guide - ChessManager Blog
Nov 17, 2022 · A round-robin tournament is one where all the players face off against each other at least once. And the one who has the best performance is declared the ...
[67]
Round robin brainstorming 101: guide, tips, and best practices - Mural
Jul 20, 2023 · Learn how to use the round robin technique to run a quick brainstorming exercise. Use the round robin technique to help your team collaborate ...
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Round robin template | Mural
The round robin template iterates ideas as they move from person to person, encouraging collaboration and building upon others' ideas.Missing: sprint | Show results with:sprint
[69]
Round Robin - Design Sprint Kit
Round Robin is a superb way to get a small team of people to create a collection of atypical ideas around a particular challenge.Missing: Mural | Show results with:Mural
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Increase Participation from your Scrum Team with Round Robin ...
Jan 4, 2024 · Round Robin is a simple technique that involves going around the group and asking each person to share their ideas, opinions, or feedback on a specific topic ...
[71]
Round robin - Better Evaluation
Getting started. Not sure where to start? We've compiled some of the basics about evaluation and using the BetterEvaluation site to help you find your way.
[72]
What is Popcorn Style? - Facilitator School
Sep 30, 2024 · Popcorn style refers to a technique to mix the order of speakers in a meeting by letting the current speaker choose the one who will speak next.Missing: variant | Show results with:variant
[73]
What Is a Round Robin Meeting and How to Set It Up | Chili Piper
May 26, 2020 · Leads are sent to reps in a rotational manner based on their position in a queue. The process is done automatically based on configured routing ...Automatically Route Leads · Use Round Robin Reporting To... · Faqs On Round Robin Meetings
[74]
Round Robin Distribution: Enhancing Lead Distribution Strategies
Jun 10, 2024 · One of the main benefits of round-robin distribution is its inherent fairness. By spreading out leads evenly, it eliminates any biases or ...
[75]
The Power of Round Robin Lead Routing for Faster Conversions
Sep 18, 2024 · Advantages of Round Robin Lead Routing · Improved Team Morale: A fair distribution of leads helps prevent burnout and frustration among sales ...Missing: drawbacks | Show results with:drawbacks
[76]
Streamlining Sales with Round Robin Lead Routing - Sweep.io
Dec 14, 2024 · Comparing round robin to other methods reveals distinct benefits and drawbacks. Here are some common lead distribution methods: Geographic ...
[77]
How to Create a Lead Distribution Process that Drives Revenue
Jan 10, 2022 · All have benefits and drawbacks ... Typical among early-stage organizations, “Round Robin” distribution simply divides leads equally across your ...<|separator|>
[78]
Round Robin Meeting: What is it, When to Use Them and Best ...
The main disadvantage to round robin meeting scheduling is that it prioritizes equal lead distribution over sales effectiveness. There are many scenarios ...
[79]
Delving into Round Robin and Weighted Round Robin - Lead Prosper
Mar 7, 2024 · To put it simply, round robin distribution takes all of your buyers, groups them together, and then cycles new leads to the next buyer in line ...
[80]
Round Robin Lead Assignment: More than Equal Distribution
Round robin lead assignment can use custom weighting to route more leads based on skill or availability, and capping limits to balance workloads.
[81]
1621 Round Robin Agreement of the Walloons - WikiTree
Sir Dudley Carlton addressed a letter to Secretary Sir George Calvert from The Hague, July 19, 1621, in these words: "Here hath been with me of late a certain ...
[82]
Round Robin – All the Whyser
May 30, 2022 · Fake Etymology, Real History. Some sources claim that the term comes from the French ruban rond (“round ribbon”), which was likewise a petition ...
[83]
Your Complete Guide to Round Robin Betting - Action Network
Dec 19, 2024 · A round robin in sports betting is a type of parlay betting where the sportsbook automatically creates smaller parlays from a larger list of bets.
[84]
The Round Robin Bet: The Variance-Reducing Parlay Play - Unabated
Jun 2, 2023 · A round robin bet is a specific type of sports bet that allows you to place multiple parlay wagers simultaneously.
[85]
What is a Round Robin? - Support Home - FanDuel
A Round Robin is an easy way to place multiple parlays at once. When you place a Round Robin, you're placing individual bets on every possible parlay ...
[86]
Round Robin Bet in Sports Betting - Betsperts
The round-robin betting calculator will generate six parlays of two teams each. Based on your four selections, a $5 wager on each means risking $30. If all ...Missing: combinatorial | Show results with:combinatorial
[87]
Round Robin Betting: A Step By Step Guide - Outplayed
Oct 29, 2024 · Bookies Edge: As with most accumulator bets, the Round Robin bets usually have a higher house edge in favour of the bookies compared to straight ...
[88]
Round Robin Bets: How Round Robin Betting Works - Betting USA
Sep 30, 2025 · By placing a round robin bet, the bettor receives a tax discount of nearly 50%. That doesn't mean that round robins are always smarter bets than ...
[89]
How Do Betting Sites Make Money? - The Betting Professionals
Apr 19, 2025 · Discover how betting sites make money through house edge, odds setting, risk management, and user behavior ... Curious about round robin betting?