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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 20201120 (experimental) 11d39d4b278efb4a0134f495d698c2cd764c06e4
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 11d39d4b278efb4a0134f495d698c2cd764c06e4
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.Ofast test results

Run Order Start Time Duration
Current 1605896127000.11d39d4b278efb4a0134f495d698c2cd764c06e4 2020-11-21T06:46:07.988352 0:00:58.082555
Previous 1605018828000.4441cdc0a52d4027b8a6b8da3d47ed09be2a4583 2020-11-10T22:21:24.025448 0:01:34.599251
Baseline 1571915009000.6f4da220ebfa0c3a3db02109dcb371da27516a3b 2019-10-25T18:03:45.968290 0:01:31.225785

Tests Summary

Status Group # # (B)
Performance Regressions 1 11
Performance Improvements 15 21
Added Tests 3 3
Unchanged Tests 251 235
Total Tests 270

Run-Over-Run Changes Detail

Performance Regressions - compile_time Δ Previous Current σ Δ (B) σ (B)
random/pr60243.c 17.70% 83.699 98.513 - -17.98% -

Performance Improvements - compile_time Δ Previous Current σ Δ (B) σ (B)
random/pr38518.c -77.80% 34.066 7.562 - -77.78% -
random/pr36262.c -77.38% 33.587 7.598 - -77.92% -
random/pr39326.c -23.38% 83.824 64.226 - -39.97% -
random/pr36439.cpp -6.36% 35.254 33.011 - 1.54% -
random/pr26854-2.c -3.10% 53.036 51.392 - -11.55% -

Performance Improvements - mem_bytes Δ Previous Current σ Δ (B) σ (B)
random/pr36262.c -87.42% 2.92 GB 375.40 MB - -87.38% -
random/pr38518.c -87.41% 2.91 GB 375.90 MB - -87.36% -
random/pr60243.c -2.63% 1.99 GB 1.94 GB - -8.20% -

Performance Improvements - size Δ Previous Current σ Δ (B) σ (B)
random/pr36262.c/elf -79.36% 520.48 KB 107.44 KB - -79.20% -
random/pr38518.c/elf -79.36% 520.48 KB 107.44 KB - -79.20% -
random/pr36262.c/elf/sections/text -78.90% 495.49 KB 104.55 KB - -78.85% -
random/pr38518.c/elf/sections/text -78.90% 495.49 KB 104.55 KB - -78.85% -
random/pr36439.cpp/elf/sections/text -17.51% 129.50 KB 106.82 KB - -13.27% -
random/pr36439.cpp/elf -4.12% 1.74 MB 1.67 MB - -4.05% -
random/pr39326.c/elf -2.46% 720.62 KB 702.87 KB - -27.16% -

Added Tests - size
random/empty.C/elf/sections/text
random/empty.c/elf/sections/text
random/pr29433.cpp/elf/sections/text

Run-Over-Baseline Changes Detail

Performance Regressions - compile_time Δ (B) Baseline Current σ (B) Δ σ
random/pr12392.cpp 42.71% 39.689 56.639 - 0.27% -
random/pr12850.cpp 3.64% 40.232 41.696 - 0.41% -

Performance Regressions - mem_bytes Δ (B) Baseline Current σ (B) Δ σ
random/pr39326.c 144.35% 572.54 MB 1.37 GB - 0.51% -
random/pr29433.cpp 13.38% 330.98 MB 375.28 MB - 0.66% -
random/pr12392.cpp 12.39% 912.91 MB 1.00 GB - -0.01% -
random/empty.C 5.93% 17.53 MB 18.57 MB - 0.04% -
random/empty.c 4.59% 16.43 MB 17.18 MB - 1.59% -
random/pr12850.cpp 3.71% 571.05 MB 592.24 MB - 0.46% -
random/pr36291.cpp 3.41% 482.21 MB 498.66 MB - 0.94% -

Performance Regressions - size Δ (B) Baseline Current σ (B) Δ σ
random/pr26854-2.c/elf/sections/text 11.48% 323.72 KB 360.90 KB - -0.53% -
random/pr26854-2.c/elf 2.47% 975.09 KB 999.20 KB - -0.22% -

Performance Improvements - compile_time Δ (B) Baseline Current σ (B) Δ σ
random/pr36262.c -77.92% 34.404 7.598 - -77.38% -
random/pr38518.c -77.78% 34.036 7.562 - -77.80% -
random/pr70614.c -42.85% 1.422 0.812 - -0.11% -
random/pr39326.c -39.97% 106.985 64.226 - -23.38% -
random/pr60243.c -17.98% 120.115 98.513 - 17.70% -
random/pr29433.cpp -14.07% 3.938 3.384 - 0.36% -
random/pr26854-2.c -11.55% 58.105 51.392 - -3.10% -

Performance Improvements - mem_bytes Δ (B) Baseline Current σ (B) Δ σ
random/pr36262.c -87.38% 2.91 GB 375.40 MB - -87.42% -
random/pr38518.c -87.36% 2.91 GB 375.90 MB - -87.41% -
random/pr26854-2.c -17.72% 1.45 GB 1.19 GB - -0.82% -
random/pr60243.c -8.20% 2.11 GB 1.94 GB - -2.63% -
random/pr36439.cpp -2.02% 459.73 MB 450.45 MB - -0.21% -

Performance Improvements - size Δ (B) Baseline Current σ (B) Δ σ
random/pr36262.c/elf -79.20% 516.41 KB 107.44 KB - -79.36% -
random/pr38518.c/elf -79.20% 516.41 KB 107.44 KB - -79.36% -
random/pr36262.c/elf/sections/text -78.85% 494.35 KB 104.55 KB - -78.90% -
random/pr38518.c/elf/sections/text -78.85% 494.35 KB 104.55 KB - -78.90% -
random/pr12850.cpp/elf/sections/text -29.47% 91.29 KB 64.38 KB - -1.46% -
random/pr39326.c/elf -27.16% 964.88 KB 702.87 KB - -2.46% -
random/pr36439.cpp/elf/sections/text -13.27% 123.16 KB 106.82 KB - -17.51% -
random/pr39326.c/elf/sections/text -12.34% 339.84 KB 297.91 KB - -1.02% -
random/pr36439.cpp/elf -4.05% 1.74 MB 1.67 MB - -4.12% -

Added Tests - size
random/empty.C/elf/sections/text
random/empty.c/elf/sections/text
random/pr29433.cpp/elf/sections/text

Report Time: 0.11s
mem_bytes (bytes)
Name Current %
random/empty.C 18.57 MB -
random/empty.c 17.18 MB -
random/pr12392.cpp 1.00 GB -
random/pr12850.cpp 592.24 MB -
random/pr26854-2.c 1.19 GB -
random/pr29433.cpp 375.28 MB -
random/pr36262.c 375.40 MB -87.42%
random/pr36291.cpp 498.66 MB -
random/pr36439.cpp 450.45 MB -
random/pr38518.c 375.90 MB -87.41%
random/pr39326.c 1.37 GB -
random/pr60243.c 1.94 GB -2.63%
random/pr70614.c 62.62 MB -
Geometric Mean 327.00 MB -27.21%