Cyclictest is a high-resolution test program for measuring the Linux kernel latencies.

To run this test with the Phoronix Test Suite, the basic command is: phoronix-test-suite benchmark cyclictest.

Project Site

Test Created

2 November 2012

Test Maintainer

Michael Larabel 

Test Type


Average Install Time

8 Seconds

Average Run Time

9 Minutes, 5 Seconds

Test Dependencies

C/C++ Compiler Toolchain + NUMA


100k+ Downloads

Supported Platforms

Public Result Uploads *Reported Installs **Reported Test Completions **Test Profile Page Views ***OpenBenchmarking.orgEventsCyclictest Popularity Statisticspts/cyclictest2012.112013.032013.072013.112014.032014.072014.112015.032015.072015.112016.032016.072016.112017.032017.072017.112018.032018.072018.112019.032019.072019.112020.032020.072020.112021.032021.072021.112022.032022.072022.112023.032023.072023.116K12K18K24K30K
* Uploading of benchmark result data to is always optional (opt-in) via the Phoronix Test Suite for users wishing to share their results publicly.
** Data based on those opting to upload their test results to and users enabling the opt-in anonymous statistics reporting while running benchmarks from an Internet-connected platform.
*** Test profile page view reporting began March 2021.
Data updated weekly as of 3 December 2023.
POSIX Timer, Interval 10000 ms, 10000 Loops21.8%clock_nanosleep TIME_ABSTIME, Interval 500 ms, 100000 Loops22.4%POSIX Timer, Interval 500 ms, 100000 Loops27.3%clock_nanosleep TIME_ABSTIME, Interval 10000 ms, 10000 Loops28.5%Test Case Option

Revision History

pts/cyclictest-1.0.0   [View Source]   Fri, 02 Nov 2012 17:53:22 GMT
Initial commit of a very basic Cyclictest test profile for measuring Linux kernel latency.

Performance Metrics

Analyze Test Configuration:

Cyclictest 0.84

Test Case: clock_nanosleep TIME_ABSTIME, Interval 10000 ms, 10000 Loops metrics for this test profile configuration based on 217 public results since 18 December 2012 with the latest data as of 18 August 2023.

Additional benchmark metrics will come after has collected a sufficient data-set.

OpenBenchmarking.orgDistribution Of Public Results - Test Case: clock_nanosleep TIME_ABSTIME, Interval 10000 ms, 10000 Loops221 Results Range From 1 To 5724 ms Average11162313464615766918069211036115112661381149616111726184119562071218623012416253126462761287629913106322133363451356636813796391140264141425643714486460147164831494650615176529154065521563657514080120160200

Based on data, the selected test / test configuration (Cyclictest 0.84 - Test Case: clock_nanosleep TIME_ABSTIME, Interval 10000 ms, 10000 Loops) has an average run-time of 13 minutes. By default this test profile is set to run at least 3 times but may increase if the standard deviation exceeds pre-defined defaults or other calculations deem additional runs necessary for greater statistical accuracy of the result.

OpenBenchmarking.orgMinutesTime Required To Complete BenchmarkTest Case: clock_nanosleep TIME_ABSTIME, Interval 10000 ms, 10000 LoopsRun-Time612182430Min: 5 / Avg: 12.61 / Max: 25

Based on public results, the selected test / test configuration has an average standard deviation of 5.2%.

OpenBenchmarking.orgPercent, Fewer Is BetterAverage Deviation Between RunsTest Case: clock_nanosleep TIME_ABSTIME, Interval 10000 ms, 10000 LoopsDeviation816243240Min: 0 / Avg: 5.23 / Max: 37

Tested CPU Architectures

This benchmark has been successfully tested on the below mentioned architectures. The CPU architectures listed is where successful result uploads occurred, namely for helping to determine if a given test is compatible with various alternative CPU architectures.

CPU Architecture
Kernel Identifier
Verified On
Intel / AMD x86 64-bit
(Many Processors)
Baikal-T1 1.2 GHz MIPS P5600 V3.0 FPU V2.0
Loongson LoongArch 64-bit
Intel / AMD x86 32-bit
(Many Processors)
ARMv7 32-bit
ARMv7 rev 0, ARMv7 rev 0 4-Core
ARMv6 32-bit
ARMv6-compatible rev 7, ARMv7
ARMv8 64-bit
AArch64 rev 3, ARMv8 Cortex-A53 4-Core, ARMv8 Cortex-A72 4-Core, ARMv8 Neoverse-N1, Phytium FT2000PLUS, Rockchip ARMv8 Cortex-A55 4-Core

Recent Test Results Results Compare

1 System - 4 Benchmark Results

ARMv8 Neoverse-N1 - Amazon EC2 t4g.large - Amazon Device 0200

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1 System - 4 Benchmark Results

AMD EPYC 9R14 - Amazon EC2 m7a.large - Intel 440FX 82441FX PMC

Ubuntu 22.04 - 5.19.0-1025-aws - 1.3.238

1 System - 4 Benchmark Results

Intel Xeon Platinum 8488C - Amazon EC2 m7i-flex.large - Intel 440FX 82441FX PMC

Ubuntu 22.04 - 5.19.0-1029-aws - 1.3.238

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