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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) 2.31
Copyright (C) 2018 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) 10.0.0 20190501 (experimental) f906b0e8a5f670459147e052fe74f9173eea3081
Copyright (C) 2019 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 f906b0e8a5f670459147e052fe74f9173eea3081
glibc GNU C Library (GNU libc) stable release version 2.27 (git 3260f6ce87b7).
Copyright (C) 2018 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 8.1.1 20180614 [gcc-8-branch revision 261584].
libc ABIs: UNIQUE IFUNC
For bug reporting instructions, please see:
<http://bugs.opensuse.org>.
glibc_location /lib64/libc.so.6
ld GNU ld (GNU Binutils; openSUSE Tumbleweed) 2.31
options None
reason None
uname Linux kaby 4.18.7-1-default #1 SMP PREEMPT Sun Sep 9 10:26:20 UTC 2018 (952d850) x86_64 x86_64 x86_64 GNU/Linux
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kaby.gcc-trunk.Ofast test results

Run Order Start Time Duration
Current 1556710734000.f906b0e8a5f670459147e052fe74f9173eea3081 2019-05-01T19:19:05.168550 0:00:41.210154
Previous 1556567332000.4daa9280e6123561cc9e4a8fb04cbd1ccaacb75b 2019-04-30T00:30:43.087797 0:00:41.198961
Baseline 1543354856000.b3df66f19fc14b161a2867119b1577b80e7de7f9 2018-11-28T02:32:26.696558 0:00:41.014395

Tests Summary

Status Group # # (B)
Performance Regressions 0 13
Performance Improvements 1 12
Added Tests 3 3
Unchanged Tests 302 278
Total Tests 306

Run-Over-Run Changes Detail

Performance Improvements - compile_time Δ Previous Current σ Δ (B) σ (B)
random/pr60243.c -3.07% 233.719 226.555 - -13.04% -

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/pr12850.cpp 26.58% 28.163 35.648 - 1.35% -
random/pr36498.cpp 21.04% 13.584 16.442 - 0.02% -
random/pr36439.cpp 16.89% 24.416 28.540 - 0.25% -
random/pr26854-2.c 2.78% 40.752 41.885 - 0.37% -
random/pr69609.c 2.76% 154.231 158.488 - -1.35% -
random/pr44563.c 2.26% 51.121 52.278 - 1.72% -

Performance Regressions - mem_bytes Δ (B) Baseline Current σ (B) Δ σ
random/pr44563.c 5.09% 1.31 GB 1.37 GB - 0.01% -
random/pr39326.c 2.73% 675.98 MB 694.45 MB - 0.00% -

Performance Regressions - size Δ (B) Baseline Current σ (B) Δ σ
random/pr36498.cpp/elf/sections/text 21.39% 383.31 KB 465.30 KB - 0.00% -
random/pr36439.cpp/elf 11.87% 1.57 MB 1.76 MB - 0.00% -
random/pr36498.cpp/elf 10.33% 1.55 MB 1.71 MB - 0.00% -
random/pr12850.cpp/elf 9.33% 3.28 MB 3.59 MB - 0.00% -
random/pr39326.c/elf/sections/text 3.96% 330.11 KB 343.19 KB - 0.00% -

Performance Improvements - compile_time Δ (B) Baseline Current σ (B) Δ σ
random/pr36262.c -16.09% 93.470 78.430 - -0.17% -
random/pr38518.c -13.43% 90.734 78.551 - -0.58% -
random/pr60243.c -13.04% 260.528 226.555 - -3.07% -
random/pr12392.cpp -8.39% 31.626 28.972 - 1.20% -
random/pr70614.c -4.17% 0.788 0.755 - 0.13% -

Performance Improvements - mem_bytes Δ (B) Baseline Current σ (B) Δ σ
random/pr12392.cpp -6.45% 808.67 MB 756.53 MB - -0.08% -
random/pr36439.cpp -4.21% 454.61 MB 435.45 MB - -0.19% -
random/pr36498.cpp -3.15% 385.09 MB 372.97 MB - -0.06% -

Performance Improvements - size Δ (B) Baseline Current σ (B) Δ σ
random/pr36439.cpp/elf/sections/text -54.28% 12.09 KB 5.53 KB - 0.00% -
random/pr12850.cpp/elf/sections/text -17.91% 33.93 KB 27.85 KB - 0.00% -
random/pr69609.c/elf -2.92% 1.32 MB 1.28 MB - 0.00% -
random/pr69609.c/elf/sections/text -2.33% 486.89 KB 475.53 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: 0.14s