Linux 5.10 Regression Bisected On EPYC 7742 2P

2 x AMD EPYC 7742 64-Core testing with a AMD DAYTONA_X (RDY1006G BIOS) and ASPEED on Ubuntu 20.04 via the Phoronix Test Suite.

Compare your own system(s) to this result file with the Phoronix Test Suite by running the command: phoronix-test-suite benchmark 2010248-PTS-LINUX51058
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v5.9
October 24 2020
  8 Minutes
v5.10 Oct23
October 24 2020
  9 Minutes
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Linux 5.10 Regression Bisected On EPYC 7742 2POpenBenchmarking.orgPhoronix Test Suite2 x AMD EPYC 7742 64-Core @ 2.25GHz (128 Cores / 256 Threads)AMD DAYTONA_X (RDY1006G BIOS)AMD Starship/Matisse504GB3841GB Micron_9300_MTFDHAL3T8TDPASPEED2 x Mellanox MT27710Ubuntu 20.045.9.1-050901-generic (x86_64)5.9.0-050900daily20201023-generic (x86_64)GNOME Shell 3.36.4X Server 1.20.8modesetting 1.20.8GCC 9.3.0ext41024x768ProcessorMotherboardChipsetMemoryDiskGraphicsNetworkOSKernelsDesktopDisplay ServerDisplay DriverCompilerFile-SystemScreen ResolutionLinux 5.10 Regression Bisected On EPYC 7742 2P BenchmarksSystem Logs- --build=x86_64-linux-gnu --disable-vtable-verify --disable-werror --enable-checking=release --enable-clocale=gnu --enable-default-pie --enable-gnu-unique-object --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++,gm2 --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-multiarch --enable-multilib --enable-nls --enable-objc-gc=auto --enable-offload-targets=nvptx-none,hsa --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --program-prefix=x86_64-linux-gnu- --target=x86_64-linux-gnu --with-abi=m64 --with-arch-32=i686 --with-default-libstdcxx-abi=new --with-gcc-major-version-only --with-multilib-list=m32,m64,mx32 --with-target-system-zlib=auto --with-tune=generic --without-cuda-driver -v - Scaling Governor: acpi-cpufreq ondemand - CPU Microcode: 0x8301034- itlb_multihit: Not affected + l1tf: Not affected + mds: Not affected + meltdown: Not affected + spec_store_bypass: Mitigation of SSB disabled via prctl and seccomp + spectre_v1: Mitigation of usercopy/swapgs barriers and __user pointer sanitization + spectre_v2: Mitigation of Full AMD retpoline IBPB: conditional IBRS_FW STIBP: conditional RSB filling + srbds: Not affected + tsx_async_abort: Not affected

v5.9 vs. v5.10 Oct23 ComparisonPhoronix Test SuiteBaseline+9.6%+9.6%+19.2%+19.2%+28.8%+28.8%2%32 - Process38.2%Summer Nature 4K2.9%S.N.1Hackbenchdav1ddav1dv5.9v5.10 Oct23

Linux 5.10 Regression Bisected On EPYC 7742 2Pdav1d: Chimera 1080pdav1d: Summer Nature 4Kdav1d: Summer Nature 1080pdav1d: Chimera 1080p 10-bithackbench: 32 - Processv5.9v5.10 Oct23844.48338.40785.32179.7660.791832.21328.81800.98179.3683.993OpenBenchmarking.org

dav1d

Dav1d is an open-source, speedy AV1 video decoder. This test profile times how long it takes to decode sample AV1 video content. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgFPS, More Is Betterdav1d 0.7.0Video Input: Chimera 1080pv5.9v5.10 Oct232004006008001000SE +/- 4.20, N = 3SE +/- 11.93, N = 3844.48832.21MIN: 259.03 / MAX: 1107.82MIN: 239.9 / MAX: 1108.821. (CC) gcc options: -pthread
OpenBenchmarking.orgFPS, More Is Betterdav1d 0.7.0Video Input: Chimera 1080pv5.9v5.10 Oct23150300450600750Min: 837.17 / Avg: 844.48 / Max: 851.72Min: 812.07 / Avg: 832.21 / Max: 853.351. (CC) gcc options: -pthread

OpenBenchmarking.orgFPS, More Is Betterdav1d 0.7.0Video Input: Summer Nature 4Kv5.9v5.10 Oct2370140210280350SE +/- 3.43, N = 3SE +/- 5.00, N = 3338.40328.81MIN: 58.56 / MAX: 458.03MIN: 57.62 / MAX: 452.351. (CC) gcc options: -pthread
OpenBenchmarking.orgFPS, More Is Betterdav1d 0.7.0Video Input: Summer Nature 4Kv5.9v5.10 Oct2360120180240300Min: 333.98 / Avg: 338.4 / Max: 345.16Min: 319.97 / Avg: 328.81 / Max: 337.281. (CC) gcc options: -pthread

OpenBenchmarking.orgFPS, More Is Betterdav1d 0.7.0Video Input: Summer Nature 1080pv5.9v5.10 Oct232004006008001000SE +/- 11.58, N = 4SE +/- 9.58, N = 3785.32800.98MIN: 123.09 / MAX: 1078.62MIN: 132.68 / MAX: 1075.361. (CC) gcc options: -pthread
OpenBenchmarking.orgFPS, More Is Betterdav1d 0.7.0Video Input: Summer Nature 1080pv5.9v5.10 Oct23140280420560700Min: 771.88 / Avg: 785.32 / Max: 819.95Min: 783.87 / Avg: 800.98 / Max: 817.011. (CC) gcc options: -pthread

OpenBenchmarking.orgFPS, More Is Betterdav1d 0.7.0Video Input: Chimera 1080p 10-bitv5.9v5.10 Oct234080120160200SE +/- 0.66, N = 3SE +/- 0.43, N = 3179.76179.36MIN: 127.32 / MAX: 252.67MIN: 125.06 / MAX: 245.961. (CC) gcc options: -pthread
OpenBenchmarking.orgFPS, More Is Betterdav1d 0.7.0Video Input: Chimera 1080p 10-bitv5.9v5.10 Oct23306090120150Min: 178.59 / Avg: 179.76 / Max: 180.88Min: 178.49 / Avg: 179.36 / Max: 179.841. (CC) gcc options: -pthread

Hackbench

This is a benchmark of Hackbench, a test of the Linux kernel scheduler. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgSeconds, Fewer Is BetterHackbenchCount: 32 - Type: Processv5.9v5.10 Oct2320406080100SE +/- 0.09, N = 3SE +/- 0.06, N = 360.7983.991. (CC) gcc options: -lpthread
OpenBenchmarking.orgSeconds, Fewer Is BetterHackbenchCount: 32 - Type: Processv5.9v5.10 Oct231632486480Min: 60.61 / Avg: 60.79 / Max: 60.9Min: 83.9 / Avg: 83.99 / Max: 84.11. (CC) gcc options: -lpthread