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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
Address sizes: 39 bits physical, 48 bits virtual
Byte Order: Little Endian
CPU(s): 4
On-line CPU(s) list: 0-3
Vendor ID: GenuineIntel
Model name: Intel(R) Core(TM) i5-7400 CPU @ 3.00GHz
CPU family: 6
Model: 158
Thread(s) per core: 1
Core(s) per socket: 4
Socket(s): 1
Stepping: 9
CPU max MHz: 3500.0000
CPU min MHz: 800.0000
BogoMIPS: 6000.00
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault invpcid_single pti ssbd ibrs ibpb stibp fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp md_clear flush_l1d arch_capabilities
L1d cache: 128 KiB (4 instances)
L1i cache: 128 KiB (4 instances)
L2 cache: 1 MiB (4 instances)
L3 cache: 6 MiB (1 instance)
NUMA node(s): 1
NUMA node0 CPU(s): 0-3
Vulnerability Itlb multihit: KVM: Mitigation: VMX unsupported
Vulnerability L1tf: Mitigation; PTE Inversion
Vulnerability Mds: Mitigation; Clear CPU buffers; SMT disabled
Vulnerability Meltdown: Mitigation; PTI
Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl
Vulnerability Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization
Vulnerability Spectre v2: Mitigation; Full generic retpoline, IBPB conditional, IBRS_FW, STIBP disabled, RSB filling
Vulnerability Srbds: Mitigation; Microcode
Vulnerability Tsx async abort: Not affected
memory MemTotal: 8000332 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 20201231 (experimental) d2eb616a0f7bea78164912aa438c29fe1ef5774a
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 d2eb616a0f7bea78164912aa438c29fe1ef5774a
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 kaby 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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kaby.gcc-trunk.Ofast test results

Run Order Start Time Duration
Current 1609409366000.d2eb616a0f7bea78164912aa438c29fe1ef5774a 2020-12-31T16:33:05.034027 0:00:46.092780
Previous 1608855380000.8daa719bdca44f50d6bbe8ddda2920779e1e5ae4 2020-12-25T10:40:28.613538 0:00:45.974788
Baseline 1543354856000.b3df66f19fc14b161a2867119b1577b80e7de7f9 2018-11-28T02:32:26.696558 0:00:41.014395

Tests Summary

Status Group # # (B)
Performance Regressions 1 24
Performance Improvements 1 6
Added Tests 3 3
Unchanged Tests 301 273
Total Tests 306

Run-Over-Run Changes Detail

Performance Regressions - compile_time Δ Previous Current σ Δ (B) σ (B)
random/pr29433.cpp 15.36% 3.007 3.469 - 30.49% -

Performance Improvements - compile_time Δ Previous Current σ Δ (B) σ (B)
random/pr12392.cpp -2.05% 47.636 46.659 - 47.53% -

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 47.53% 31.626 46.659 - -2.05% -
random/pr12850.cpp 37.19% 28.163 38.636 - -1.31% -
random/pr36439.cpp 31.94% 24.416 32.214 - -0.54% -
random/pr29433.cpp 30.49% 2.659 3.469 - 15.36% -
random/pr26854-2.c 20.47% 40.752 49.094 - -0.30% -

Performance Regressions - mem_bytes Δ (B) Baseline Current σ (B) Δ σ
random/pr39326.c 106.27% 675.98 MB 1.36 GB - 0.08% -
random/pr60243.c 15.46% 1.68 GB 1.94 GB - -0.01% -
random/pr29433.cpp 11.55% 334.52 MB 373.15 MB - 0.05% -
random/empty.C 10.14% 17.11 MB 18.84 MB - 0.00% -
random/pr12392.cpp 8.54% 808.67 MB 877.74 MB - 0.05% -
random/empty.c 6.04% 16.17 MB 17.15 MB - 1.11% -
random/pr12850.cpp 4.30% 568.00 MB 592.44 MB - 0.12% -
random/pr36291.cpp 2.82% 482.72 MB 496.35 MB - 0.01% -

Performance Regressions - size Δ (B) Baseline Current σ (B) Δ σ
random/pr36439.cpp/elf/sections/text 972.78% 12.09 KB 129.67 KB - -0.01% -
random/pr12850.cpp/elf/sections/text 286.87% 33.93 KB 131.26 KB - 0.00% -
random/pr36439.cpp/elf 10.24% 1.57 MB 1.74 MB - -0.02% -
random/pr36262.c/elf 8.96% 503.58 KB 548.69 KB - 0.00% -
random/pr38518.c/elf 8.96% 503.58 KB 548.69 KB - 0.00% -
random/pr36262.c/elf/sections/text 8.36% 483.28 KB 523.69 KB - 0.00% -
random/pr38518.c/elf/sections/text 8.36% 483.28 KB 523.69 KB - 0.00% -
random/pr26854-2.c/elf/sections/text 6.41% 326.09 KB 346.99 KB - 0.00% -
random/pr12850.cpp/elf 5.64% 3.28 MB 3.47 MB - 0.00% -
random/pr12392.cpp/elf/sections/text 4.19% 386.45 KB 402.65 KB - 0.00% -
random/pr29433.cpp/elf 2.96% 89.03 KB 91.66 KB - 0.00% -

Performance Improvements - compile_time Δ (B) Baseline Current σ (B) Δ σ
random/pr36262.c -73.12% 93.470 25.125 - -0.01% -
random/pr38518.c -72.10% 90.734 25.311 - 1.20% -
random/pr60243.c -71.96% 260.528 73.045 - 0.36% -
random/pr39326.c -29.29% 93.314 65.984 - 0.76% -

Performance Improvements - size Δ (B) Baseline Current σ (B) Δ σ
random/pr39326.c/elf -24.75% 955.34 KB 718.88 KB - 0.00% -
random/pr39326.c/elf/sections/text -5.94% 330.11 KB 310.52 KB - 0.00% -

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

Report Time: 0.20s