linux-kernel - Re: Dhrystone -- userland version

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Message-ID: <28821r94-886p-5816-7s47-4s0q7p846qp@vanv.qr>
Date:   Wed, 11 Jan 2023 17:32:23 +0100 (CET)
From:   Jan Engelhardt <jengelh@...i.de>
To:     Pavel Machek <pavel@....cz>
cc:     Theodore Ts'o <tytso@....edu>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        kernel list <linux-kernel@...r.kernel.org>,
        Andrew Morton <akpm@...l.org>
Subject: Re: Dhrystone -- userland version

On Wednesday 2023-01-11 16:30, Pavel Machek wrote:
>
>> (All of) you could install boinc-client and just exercise
>> --run_cpu_benchmarks without (I think) attaching to any particular
>> computing project. The package should be in distros and you get
>> both Dhrystone and Whetstone.
>
>Hehe, nice trick, but it does not work for me:
>
>boinc --run_cpu_benchmarks
>
>does not actually seem to run the benchmarks.

Maybe I misread the manpage.

# runuser -u boinc -- /bin/bash --login
$ cd ~
$ boinccmd --get_messages
11: 11-Jan-2023 17:23:50 (low) [] Processor: 16 AuthenticAMD AMD Ryzen 7 3700X 8-Core Processor [Family 23 Model 113 Stepping 0]
12: 11-Jan-2023 17:23:50 (low) [] Processor features: 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 rapl 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 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 arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic v_vmsave_vmload vgif v_spec_ctrl umip rdpid overflow_recov succor smca sev sev_es
13: 11-Jan-2023 17:23:50 (low) [] OS: Linux openSUSE: openSUSE Tumbleweed [6.1.3|libc 2.36]
...
$ boinccmd --run_benchmarks
...
$ boinccmd --get_messages
30: 11-Jan-2023 17:24:31 (low) [] Running CPU benchmarks
31: 11-Jan-2023 17:24:31 (low) [] Suspending computation - CPU benchmarks in progress
32: 11-Jan-2023 17:25:02 (low) [] Benchmark results:
33: 11-Jan-2023 17:25:02 (low) [] Number of CPUs: 16
34: 11-Jan-2023 17:25:02 (low) [] 7136 floating point MIPS (Whetstone) per CPU
35: 11-Jan-2023 17:25:02 (low) [] 124780 integer MIPS (Dhrystone) per CPU
36: 11-Jan-2023 17:25:03 (low) [] Resuming computation

(This is using the openSUSE boinc-client package. It's modeled as a
daemon/service, so runs without X11 or Wayland, since Geert was wondering.)

>Thanks, but I really want an in-kernel benchmark

Can't have everything :)