Core-Latency

This is a test of core-latency, which measures the latency between all core combinations on the system processor(s). Reported is the average latency.

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

Project Site

github.com

Test Created

14 June 2019

Test Maintainer

Michael Larabel 

Test Type

Processor

Average Install Time

15 Seconds

Average Run Time

23 Minutes, 58 Seconds

Test Dependencies

C/C++ Compiler Toolchain + C++ Boost

Accolades

10k+ Downloads

Supported Platforms


Public Result Uploads *Reported Installs **Reported Test Completions **Test Profile Page Views ***OpenBenchmarking.orgEventsCore-Latency Popularity Statisticspts/core-latency2019.062019.072019.082019.092019.102019.112019.122020.012020.022020.032020.042020.052020.062020.072020.082020.092020.102020.112020.122021.012021.022021.032021.042021.052021.062021.072021.082021.092021.102021.112021.122022.012022.022022.032022.042022.052022.062022.072022.082022.097001400210028003500
* Uploading of benchmark result data to OpenBenchmarking.org 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 OpenBenchmarking.org 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 current as of 27 September 2022.

Revision History

pts/core-latency-1.0.0   [View Source]   Fri, 14 Jun 2019 16:07:58 GMT
Initial commit of core-latency benchmark.


Performance Metrics

Analyze Test Configuration:

Core-Latency

Average Latency Between CPU Cores

OpenBenchmarking.org metrics for this test profile configuration based on 731 public results since 14 June 2019 with the latest data as of 24 August 2022.

Below is an overview of the generalized performance for components where there is sufficient statistically significant data based upon user-uploaded results. It is important to keep in mind particularly in the Linux/open-source space there can be vastly different OS configurations, with this overview intended to offer just general guidance as to the performance expectations.

Component
Percentile Rank
# Compatible Public Results
ns (Average)
100th
3
51 +/- 3
98th
5
70 +/- 2
97th
4
71 +/- 4
95th
3
75 +/- 2
94th
3
77 +/- 3
92nd
15
80 +/- 5
91st
3
82 +/- 5
84th
6
96 +/- 2
82nd
5
103 +/- 8
81st
3
106 +/- 1
81st
4
106 +/- 3
79th
4
111 +/- 3
77th
5
118 +/- 5
Mid-Tier
75th
> 124
70th
3
142 +/- 3
70th
4
143 +/- 11
64th
4
158 +/- 7
Median
50th
224
40th
5
236 +/- 29
32nd
225
250 +/- 22
Low-Tier
25th
> 265
OpenBenchmarking.orgDistribution Of Public Results - Average Latency Between CPU Cores731 Results Range From 32 To 1088 ns326496128160192224256288320352384416448480512544576608640672704736768800832864896928960992102410561088306090120150

Based on OpenBenchmarking.org data, the selected test / test configuration (Core-Latency - Average Latency Between CPU Cores) has an average run-time of 9 minutes. By default this test profile is set to run at least 1 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 BenchmarkAverage Latency Between CPU CoresRun-Time20406080100Min: 1 / Avg: 9.1 / Max: 89

Does It Scale Well With Increasing Cores?

No, based on the automated analysis of the collected public benchmark data, this test / test settings does not generally scale well with increasing CPU core counts. Data based on publicly available results for this test / test settings, separated by vendor, result divided by the reference CPU clock speed, grouped by matching physical CPU core count, and normalized against the smallest core count tested from each vendor for each CPU having a sufficient number of test samples and statistically significant data.

IntelAMDOpenBenchmarking.orgRelative Core Scaling To BaseCore-Latency CPU Core ScalingAverage Latency Between CPU Cores2468120.43540.87081.30621.74162.177

Notable Instruction Set Usage

Notable instruction set extensions supported by this test, based on an automatic analysis by the Phoronix Test Suite / OpenBenchmarking.org analytics engine.

Instruction Set
Support
Instructions Detected
SSE2 (SSE2)
Used by default on supported hardware.
 
PUNPCKLQDQ MOVDQA MOVDQU COMISD MOVAPD ADDSD CVTSI2SD DIVSD UNPCKLPD MOVUPD SUBPD MULPD UNPCKHPD SUBSD MULSD UCOMISD SQRTSD PADDQ PSRLDQ ANDPD MOVMSKPD MOVHPD MINSD CVTTSD2SI ANDNPD ORPD MAXSD SHUFPD CMPNLESD CMPLTPD PSUBQ XORPD DIVPD MOVD
Last automated analysis: 17 January 2022

This test profile binary relies on the shared libraries libm.so.6, libc.so.6.

Tested CPU Architectures

This benchmark has been successfully tested on the below mentioned architectures. The CPU architectures listed is where successful OpenBenchmarking.org 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
x86_64
(Many Processors)
IBM POWER (PowerPC) 64-bit
ppc64le
POWER9 4-Core
Loongson LoongArch 64-bit
loongarch64
Loongson-3A5000LL, Loongson-3C5000L
Intel / AMD x86 32-bit
i686
(Many Processors)
ARMv7 32-bit
armv7l
ARMv7 Cortex-A72 4-Core, ARMv7 rev 3 4-Core, Pi 4 2GB 32-bit
ARMv8 64-bit
aarch64
AArch64 rev 4, ARMv8 Cortex-A53 4-Core, ARMv8 Cortex-A57 4-Core, ARMv8 Cortex-A57 8-Core, ARMv8 Cortex-A72, ARMv8 Cortex-A72 4-Core, ARMv8 Cortex-A73 6-Core, ARMv8 rev 0 8-Core, Pi 4 2GB 64-bit, Rockchip ARMv8 Cortex-A53 4-Core

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