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

Last Updated

14 June 2019

Test Maintainer

Michael Larabel 

Test Type

Processor

Average Install Time

15 Seconds

Average Run Time

26 Minutes, 14 Seconds

Test Dependencies

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

Accolades

10k+ Downloads

Supported Platforms


Public Result UploadsReported Installs*Test Completions*OpenBenchmarking.orgEventsCore-Latency Popularity Statisticspts/core-latency2019.062019.072019.082019.092019.102019.112019.122020.012020.022020.032020.042020.052020.062020.072020.082020.092020.102020.112020.122021.012021.022021.032004006008001000
* 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.
Data current as of Tue, 09 Mar 2021 01:26:57 GMT.

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 345 public results since 14 June 2019 with the latest data as of 26 February 2021.

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
# Matching Public Results
ns (Average)
99th
3
51 +/- 3
96th
5
70 +/- 2
96th
4
71 +/- 4
92nd
3
75 +/- 2
89th
3
77 +/- 3
86th
15
80 +/- 5
83rd
3
82 +/- 5
Mid-Tier
75th
> 87
70th
6
96 +/- 2
67th
4
102 +/- 9
64th
4
106 +/- 3
64th
3
106 +/- 1
61st
4
111 +/- 3
57th
5
118 +/- 5
Median
50th
135
47th
3
142 +/- 3
37th
4
158 +/- 7
Low-Tier
25th
> 195
16th
5
236 +/- 29
OpenBenchmarking.orgDistribution Of Public Results - Average Latency Between CPU Cores345 Results Range From 32 To 962 ns32629212215218221224227230233236239242245248251254257260263266269272275278281284287290293296220406080100

Based on OpenBenchmarking.org data, the selected test / test configuration (Core-Latency - Average Latency Between CPU Cores) has an average run-time of 5 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: 5.12 / Max: 123

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.

AMDIntelOpenBenchmarking.orgRelative Core Scaling To BaseCore-Latency CPU Core ScalingAverage Latency Between CPU Cores4680.3750.751.1251.51.875

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.
 
MOVDQA MOVDQU COMISD MOVAPD PUNPCKLQDQ 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: 30 January 2021

This test profile binary relies on the shared libraries libm.so.6, libpthread.so.0, libc.so.6.

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