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Machine Info

Fields

hardware None
os_version None

Parameters

cpu Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
Address sizes: 48 bits physical, 48 bits virtual
CPU(s): 128
On-line CPU(s) list: 0-127
Thread(s) per core: 2
Core(s) per socket: 64
Socket(s): 1
NUMA node(s): 1
Vendor ID: AuthenticAMD
CPU family: 23
Model: 49
Model name: AMD EPYC 7702 64-Core Processor
Stepping: 0
Frequency boost: enabled
CPU MHz: 1500.000
CPU max MHz: 2000.0000
CPU min MHz: 1500.0000
BogoMIPS: 3992.68
Virtualization: AMD-V
L1d cache: 2 MiB
L1i cache: 2 MiB
L2 cache: 32 MiB
L3 cache: 256 MiB
NUMA node0 CPU(s): 0-127
Vulnerability Itlb multihit: Not affected
Vulnerability L1tf: Not affected
Vulnerability Mds: Not affected
Vulnerability Meltdown: Not affected
Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl and seccomp
Vulnerability Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization
Vulnerability Spectre v2: Mitigation; Full AMD retpoline, IBPB conditional, IBRS_FW, STIBP conditional, RSB filling
Vulnerability Srbds: Not affected
Vulnerability Tsx async abort: Not affected
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb cat_l3 cdp_l3 hw_pstate ssbd mba ibrs ibpb stibp vmmcall fsgsbase bmi1 avx2 smep bmi2 cqm rdt_a rdseed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local clzero irperf xsaveerptr rdpru wbnoinvd amd_ppin arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic v_vmsave_vmload vgif umip rdpid overflow_recov succor smca
memory MemTotal: 263695408 kB
Run Info

Fields

NameValue

Parameters

NameValue
as GNU assembler (GNU Binutils; openSUSE Tumbleweed) 2.34.0.20200325-1
Copyright (C) 2020 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or later.
This program has absolutely no warranty.
This assembler was configured for a target of `x86_64-suse-linux'.
gcc gcc (GCC) 11.0.0 20201001 (experimental) 2825609706e8b155e46e216355776403ea1f5035
Copyright (C) 2020 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
git_revision 2825609706e8b155e46e216355776403ea1f5035
glibc GNU C Library (GNU libc) stable release version 2.31 (git 0a8262a1b2).
Copyright (C) 2020 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
Configured for x86_64-suse-linux.
Compiled by GNU CC version 10.1.1 20200625 [revision c91e43e9363bd119a695d64505f96539fa451bf2].
libc ABIs: UNIQUE IFUNC ABSOLUTE
For bug reporting instructions, please see:
<http://bugs.opensuse.org>.
glibc_location /lib64/libc.so.6
ld GNU ld (GNU Binutils; openSUSE Tumbleweed) 2.34.0.20200325-1
options None
reason None
uname Linux benzen 5.7.9-1-default #1 SMP Thu Jul 16 09:40:08 UTC 2020 (a010166) x86_64 x86_64 x86_64 GNU/Linux
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benzen.gcc-trunk-honza.O0_g test results

Run Order Start Time Duration
Current 1601589882000.2825609706e8b155e46e216355776403ea1f5035 2020-10-02T03:37:33.332861 0:01:33.534061
Previous 1579035419000.c478047c0fd71e8bd8e069c729b57a89b75ee004 2020-01-14T23:29:36.477042 0:01:31.302815
Baseline 1571915009000.6f4da220ebfa0c3a3db02109dcb371da27516a3b 2019-10-25T18:03:45.968290 0:01:30.681913

Tests Summary

Status Group # # (B)
Performance Regressions 11 9
Performance Improvements 9 9
Added Tests 3 3
Unchanged Tests 301 303
Total Tests 324

Run-Over-Run Changes Detail

Performance Regressions - compile_time Δ Previous Current σ Δ (B) σ (B)
random/pr28071.c 121.09% 4.598 10.165 - -4.67% -
random/pr12392.cpp 8.09% 4.439 4.798 - 1.63% -
random/pr60243.c 2.26% 42.754 43.721 - 1.64% -

Performance Regressions - mem_bytes Δ Previous Current σ Δ (B) σ (B)
random/pr12850.cpp 19.96% 495.30 MB 594.16 MB - 20.14% -
random/pr12392.cpp 13.20% 307.78 MB 348.41 MB - 15.77% -
random/empty.C 4.07% 17.77 MB 18.49 MB - 4.41% -
random/empty.c 2.51% 16.63 MB 17.05 MB - 3.09% -
random/pr29433.cpp 2.50% 1.91 GB 1.96 GB - 2.58% -

Performance Regressions - size Δ Previous Current σ Δ (B) σ (B)
random/pr29433.cpp/elf 2.83% 1.18 MB 1.22 MB - 3.00% -
random/pr36291.cpp/elf 2.25% 7.19 MB 7.35 MB - 2.47% -
random/pr39326.c/elf/sections/text 2.03% 436.45 KB 445.30 KB - 2.03% -

Performance Improvements - compile_time Δ Previous Current σ Δ (B) σ (B)
random/pr36291.cpp -3.92% 11.513 11.061 - -4.25% -
random/pr26854-2.c -3.46% 5.368 5.182 - -1.99% -
random/pr69609.c -3.29% 4.838 4.679 - -5.58% -
random/pr36439.cpp -2.98% 6.295 6.108 - -3.31% -
random/pr26854.c -2.09% 32.724 32.042 - -3.99% -

Performance Improvements - mem_bytes Δ Previous Current σ Δ (B) σ (B)
random/pr36291.cpp -5.09% 507.77 MB 481.90 MB - -5.38% -

Performance Improvements - size Δ Previous Current σ Δ (B) σ (B)
random/pr28071.c/elf/sections/text -3.36% 1.06 MB 1.02 MB - 0.00% -
tramp3d/elf/sections/text -3.14% 1.01 MB 1001.19 KB - 0.16% -
random/pr28071.c/elf -2.15% 1.63 MB 1.59 MB - 0.03% -

Added Tests - size
random/empty.C/elf/sections/text
random/empty.c/elf/sections/text
random/pr36439.cpp/elf/sections/text

Run-Over-Baseline Changes Detail

Performance Regressions - mem_bytes Δ (B) Baseline Current σ (B) Δ σ
random/pr12850.cpp 20.14% 494.55 MB 594.16 MB - 19.96% -
random/pr12392.cpp 15.77% 300.94 MB 348.41 MB - 13.20% -
random/empty.C 4.41% 17.71 MB 18.49 MB - 4.07% -
random/empty.c 3.09% 16.54 MB 17.05 MB - 2.51% -
random/pr29433.cpp 2.58% 1.91 GB 1.96 GB - 2.50% -
random/pr36439.cpp 2.21% 346.68 MB 354.34 MB - 1.63% -

Performance Regressions - size Δ (B) Baseline Current σ (B) Δ σ
random/pr29433.cpp/elf 3.00% 1.18 MB 1.22 MB - 2.83% -
random/pr36291.cpp/elf 2.47% 7.17 MB 7.35 MB - 2.25% -
random/pr39326.c/elf/sections/text 2.03% 436.45 KB 445.30 KB - 2.03% -

Performance Improvements - compile_time Δ (B) Baseline Current σ (B) Δ σ
random/pr69609.c -5.58% 4.955 4.679 - -3.29% -
random/pr28071.c -4.67% 10.663 10.165 - 121.09% -
random/pr36291.cpp -4.25% 11.552 11.061 - -3.92% -
random/pr26854.c -3.99% 33.372 32.042 - -2.09% -
random/pr36439.cpp -3.31% 6.317 6.108 - -2.98% -
random/pr12850.cpp -2.97% 13.171 12.779 - -1.28% -

Performance Improvements - mem_bytes Δ (B) Baseline Current σ (B) Δ σ
random/pr36291.cpp -5.38% 509.29 MB 481.90 MB - -5.09% -
random/pr28071.c -3.97% 301.07 MB 289.11 MB - 1.05% -
random/pr39326.c -2.08% 156.83 MB 153.56 MB - 1.03% -

Added Tests - size
random/empty.C/elf/sections/text
random/empty.c/elf/sections/text
random/pr36439.cpp/elf/sections/text

Report Time: 0.12s
mem_bytes (bytes)
Name Current %
random/empty.C 18.49 MB 4.07%
random/empty.c 17.05 MB 2.51%
random/pr12392.cpp 348.41 MB 13.20%
random/pr12850.cpp 594.16 MB 19.96%
random/pr26854-2.c 253.21 MB -
random/pr26854.c 906.56 MB -
random/pr28071.c 289.11 MB -
random/pr29433.cpp 1.96 GB 2.50%
random/pr36262.c 90.38 MB -
random/pr36291.cpp 481.90 MB -5.09%
random/pr36439.cpp 354.34 MB -
random/pr38518.c 90.37 MB -
random/pr39326.c 153.56 MB -
random/pr60243.c 1.68 GB -
random/pr69609.c 356.42 MB -
random/pr70614.c 41.53 MB -
tramp3d 596.57 MB -
Geometric Mean 239.57 MB 2.34%