Linux 5.5 Regression Bisected On AMD EPYC Rome

Tests for a future article.

Compare your own system(s) to this result file with the Phoronix Test Suite by running the command: phoronix-test-suite benchmark 1912290-HU-LINUX55HA55
Jump To Table - Results

View

Do Not Show Noisy Results
Do Not Show Results With Incomplete Data
Do Not Show Results With Little Change/Spread
List Notable Results

Statistics

Show Overall Harmonic Mean(s)
Show Overall Geometric Mean
Show Wins / Losses Counts (Pie Chart)
Normalize Results
Remove Outliers Before Calculating Averages

Graph Settings

Force Line Graphs Where Applicable
Convert To Scalar Where Applicable
Prefer Vertical Bar Graphs

Table

Show Detailed System Result Table

Run Management

Highlight
Result
Hide
Result
Result
Identifier
Performance Per
Dollar
Date
Run
  Test
  Duration
5.5.0-rc3-pts
December 29 2019
  3 Minutes
v5.4
December 29 2019
  1 Minute
8c39f71ee201
December 29 2019
  2 Minutes
937d6eefc716
December 29 2019
  1 Minute
eb275167d186
December 29 2019
  3 Minutes
48d6b4dd362c
December 29 2019
  3 Minutes
2352923c753f
December 29 2019
  1 Minute
4672c2f2026d
December 29 2019
  3 Minutes
01d1dff64662
December 29 2019
  2 Minutes
aef069a277dc
December 29 2019
  1 Minute
8321c2ecb2e8
December 29 2019
  1 Minute
341c1fda5e17
December 29 2019
  4 Minutes
bf1d2ee7bc62
December 29 2019
  1 Minute
00e0590dbaec
December 29 2019
  1 Minute
8f21a6247525
December 29 2019
  1 Minute
bce4e7e9c45e
December 29 2019
  3 Minutes
apparmor=0
December 29 2019
  2 Minutes
Invert Hiding All Results Option
  2 Minutes

Only show results where is faster than


Linux 5.5 Regression Bisected On AMD EPYC RomeOpenBenchmarking.orgPhoronix Test Suite2 x AMD EPYC 7742 64-Core @ 2.25GHz (128 Cores / 256 Threads)AMD DAYTONA_X (RDY1001C BIOS)AMD Starship/Matisse516096MB280GB INTEL SSDPE21D280GA + 256GB Micron_1100_MTFDASPEEDVE2282 x Mellanox MT27710Ubuntu 19.105.5.0-rc3-pts (x86_64) 201912295.4.0-pts (x86_64)5.4.0-rc1-pts (x86_64) 201912295.1.0-rc4-pts (x86_64) 20191229GNOME Shell 3.34.1X Server 1.20.5modesetting 1.20.5GCC 9.2.1 20191008 + LLVM 9.0.0ext41920x1080ProcessorMotherboardChipsetMemoryDiskGraphicsMonitorNetworkOSKernelsDesktopDisplay ServerDisplay DriverCompilerFile-SystemScreen ResolutionLinux 5.5 Regression Bisected On AMD EPYC Rome BenchmarksSystem Logs- --build=x86_64-linux-gnu --disable-vtable-verify --disable-werror --enable-bootstrap --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-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: 0x830101c- 5.5.0-rc3-pts, v5.4, 8c39f71ee201, 937d6eefc716, eb275167d186: Python 2.7.17 + Python 3.7.5 - 5.5.0-rc3-pts: 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 + tsx_async_abort: Not affected - v5.4: 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 + tsx_async_abort: Not affected - 8c39f71ee201: 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 + tsx_async_abort: Not affected - 937d6eefc716: 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 + tsx_async_abort: Not affected - eb275167d186: 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 + tsx_async_abort: Not affected - 48d6b4dd362c: 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 + tsx_async_abort: Not affected - 2352923c753f: 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 + tsx_async_abort: Not affected - 4672c2f2026d: 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 + tsx_async_abort: Not affected - 01d1dff64662: 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 + tsx_async_abort: Not affected - aef069a277dc: 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 - 8321c2ecb2e8: 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 - 341c1fda5e17: l1tf: Not affected + meltdown: Not affected + spec_store_bypass: Mitigation of SSB disabled via prctl and seccomp + spectre_v1: Mitigation of __user pointer sanitization + spectre_v2: Mitigation of Full AMD retpoline IBPB: conditional IBRS_FW STIBP: conditional RSB filling - bf1d2ee7bc62: l1tf: Not affected + meltdown: Not affected + spec_store_bypass: Mitigation of SSB disabled via prctl and seccomp + spectre_v1: Mitigation of __user pointer sanitization + spectre_v2: Mitigation of Full AMD retpoline IBPB: conditional IBRS_FW STIBP: conditional RSB filling - 00e0590dbaec: l1tf: Not affected + meltdown: Not affected + spec_store_bypass: Mitigation of SSB disabled via prctl and seccomp + spectre_v1: Mitigation of __user pointer sanitization + spectre_v2: Mitigation of Full AMD retpoline IBPB: conditional IBRS_FW STIBP: conditional RSB filling - 8f21a6247525: l1tf: Not affected + meltdown: Not affected + spec_store_bypass: Mitigation of SSB disabled via prctl and seccomp + spectre_v1: Mitigation of __user pointer sanitization + spectre_v2: Mitigation of Full AMD retpoline IBPB: conditional IBRS_FW STIBP: conditional RSB filling - bce4e7e9c45e: l1tf: Not affected + meltdown: Not affected + spec_store_bypass: Mitigation of SSB disabled via prctl and seccomp + spectre_v1: Mitigation of __user pointer sanitization + spectre_v2: Mitigation of Full AMD retpoline IBPB: conditional IBRS_FW STIBP: conditional RSB filling - apparmor=0: 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 + tsx_async_abort: Not affected

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: Process5.5.0-rc3-ptsv5.48c39f71ee201937d6eefc716eb275167d18648d6b4dd362c2352923c753f4672c2f2026d01d1dff64662aef069a277dc8321c2ecb2e8341c1fda5e17bf1d2ee7bc6200e0590dbaec8f21a6247525bce4e7e9c45eapparmor=01428425670SE +/- 0.20, N = 3SE +/- 0.12, N = 3SE +/- 0.15, N = 5SE +/- 0.20, N = 3SE +/- 0.21, N = 3SE +/- 0.21, N = 3SE +/- 0.19, N = 3SE +/- 0.23, N = 3SE +/- 0.12, N = 9SE +/- 0.08, N = 3SE +/- 0.11, N = 3SE +/- 0.41, N = 3SE +/- 0.05, N = 3SE +/- 0.05, N = 3SE +/- 0.15, N = 3SE +/- 0.31, N = 3SE +/- 0.15, N = 649.2215.2812.5912.5049.5849.5012.3549.8112.5414.9515.5061.6313.9114.2713.9647.7912.271. (CC) gcc options: -lpthread
OpenBenchmarking.orgSeconds, Fewer Is BetterHackbenchCount: 32 - Type: Process5.5.0-rc3-ptsv5.48c39f71ee201937d6eefc716eb275167d18648d6b4dd362c2352923c753f4672c2f2026d01d1dff64662aef069a277dc8321c2ecb2e8341c1fda5e17bf1d2ee7bc6200e0590dbaec8f21a6247525bce4e7e9c45eapparmor=01224364860Min: 48.92 / Avg: 49.22 / Max: 49.6Min: 15.08 / Avg: 15.28 / Max: 15.5Min: 12.34 / Avg: 12.59 / Max: 13.19Min: 12.1 / Avg: 12.5 / Max: 12.74Min: 49.25 / Avg: 49.58 / Max: 49.97Min: 49.28 / Avg: 49.5 / Max: 49.93Min: 12.16 / Avg: 12.35 / Max: 12.73Min: 49.44 / Avg: 49.81 / Max: 50.22Min: 12.02 / Avg: 12.54 / Max: 13.3Min: 14.79 / Avg: 14.95 / Max: 15.05Min: 15.33 / Avg: 15.5 / Max: 15.72Min: 61.16 / Avg: 61.63 / Max: 62.45Min: 13.82 / Avg: 13.91 / Max: 14Min: 14.22 / Avg: 14.27 / Max: 14.37Min: 13.73 / Avg: 13.96 / Max: 14.23Min: 47.19 / Avg: 47.79 / Max: 48.25Min: 11.59 / Avg: 12.27 / Max: 12.61. (CC) gcc options: -lpthread