System JPEG Library Decode

This test measures the time to decode a jpeg file using the system's libjpeg.

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

Test Created

18 January 2013

Last Updated

28 January 2013

Test Maintainer

Jim Kukunas 

Test Type



90k+ Downloads

Supported Platforms

Public Result Uploads *Reported Installs **Reported Test Completions **Test Profile Page Views ***OpenBenchmarking.orgEventsSystem JPEG Library Decode Popularity Statisticspts/system-libjpeg2013.012013.042013.072013.102014.012014.042014.072014.102015.012015.042015.072015.102016.012016.042016.072016.102017.022017.052017.082017.112018.022018.052018.082019.092020.052021.032021.062021.092021.122022.032022.062022.092022.1230060090012001500
* 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 current as of 2 December 2022.
Integer30.7%Float38.7%Fast Integer30.6%DCT method Option

Revision History

pts/system-libjpeg-1.1.0   [View Source]   Mon, 28 Jan 2013 13:12:18 GMT
Fix received from Arjan van de Ven.

pts/system-libjpeg-1.0.1   [View Source]   Tue, 22 Jan 2013 00:18:32 GMT
Add a to system-libjpeg to verify the existence of djpeg for JPEG decompression.

pts/system-libjpeg-1.0.0   [View Source]   Fri, 18 Jan 2013 14:40:28 GMT
Initial commit of new test profile, courtesy of Intel Open-Source Technology Center.

Performance Metrics

Analyze Test Configuration:

System JPEG Library Decode

DCT method: Float metrics for this test profile configuration based on 258 public results since 30 January 2013 with the latest data as of 8 August 2018.

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

OpenBenchmarking.orgDistribution Of Public Results - DCT method: Float258 Results Range From 0 To 296 ms173451688510211913615317018720422123825527228930650100150200250

Based on data, the selected test / test configuration (System JPEG Library Decode - DCT method: Float) has an average run-time of 2 minutes. By default this test profile is set to run at least 10 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 BenchmarkDCT method: FloatRun-Time246810

Based on public results, the selected test / test configuration has an average standard deviation of 118.3%.

OpenBenchmarking.orgPercent, Fewer Is BetterAverage Deviation Between RunsDCT method: FloatDeviation50100150200250Min: 0 / Avg: 118.35 / Max: 276

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)
IBM POWER (PowerPC) 64-bit
(Many Processors)
Intel / AMD x86 32-bit
(Many Processors)
ARMv7 32-bit
ARMv7 rev 0 4-Core, ARMv7 rev 3 8-Core, Exynos ARMv7 rev 3 8-Core
ARMv8 64-bit
AArch64 rev 4