Messages in this thread | | | Subject | Re: [cpufreq] 909c0e9cc1: fwq.fwq.med 210.0% improvement | From | Rong Chen <> | Date | Thu, 5 Mar 2020 16:18:24 +0800 |
| |
On 3/5/20 3:50 PM, Rafael J. Wysocki wrote: > On 3/5/2020 2:35 AM, kernel test robot wrote: >> Greeting, >> >> FYI, we noticed a 210.0% improvement of fwq.fwq.med due to commit: > > Well, that sounds impressive. :-) > > >> >> commit: 909c0e9cc11ba39fa5a660583b25c2431cf54deb ("cpufreq: >> intel_pstate: Use passive mode by default without HWP") >> https://git.kernel.org/cgit/linux/kernel/git/rafael/linux-pm.git >> intel_pstate-passive >> >> in testcase: fwq >> on test machine: 16 threads Intel(R) Xeon(R) CPU D-1541 @ 2.10GHz >> with 48G memory >> with following parameters: >> >> nr_task: 100% >> samples: 100000ss >> iterations: 18x >> cpufreq_governor: powersave > > The governor should be schedutil, though, unless it is explicitly set > to powersave in the test environment. > > Is that the case? > >
Hi Rafael,
Yes, we set to powersave for this test.
user :notice: [ +0.061763] 2020-03-04 21:15:33 user :notice: [ +0.057012] for cpu_dir in /sys/devices/system/cpu/cpu[0-9]* user :notice: [ +0.059494] do user :notice: [ +0.046899] online_file="$cpu_dir"/online user :notice: [ +0.074995] [ -f "$online_file" ] && [ "$(cat "$online_file")" -eq 0 ] && continue user :notice: [ +0.080600] file="$cpu_dir"/cpufreq/scaling_governor user :notice: [ +0.067584] [ -f "$file" ] && echo "powersave" > "$file" user :notice: [ +0.050203] done user :notice: [ +0.084039] Internal Reference Designator: IPMI_LAN user :notice: [ +0.059001] External Reference Designator: IPMI_LAN user :notice: [ +0.056562] IPMI Device Information user :notice: [ +0.058074] BMC ARP Control : ARP Responses Enabled, Gratuitous ARP Disabled user :notice: [ +0.053677] 2020-03-04 21:15:34 ./t_fwq -n 100000 -w 18 -t 16 user :notice: [Mar 4 21:22] numthreads = 16 user :notice: [ +0.007123] thread number 1 being created. user :notice: [ +0.008334] thread number 2 being created. user :notice: [ +0.008335] thread number 3 being created. user :notice: [ +0.008222] thread number 4 being created. user :notice: [ +0.008359] thread number 5 being created. user :notice: [ +0.008360] thread number 6 being created. user :notice: [ +0.008128] thread number 7 being created. user :notice: [ +0.008409] thread number 8 being created. user :notice: [ +0.008317] thread number 9 being created. user :notice: [ +0.008352] thread number 10 being created. user :notice: [ +0.008480] thread number 11 being created. user :notice: [ +0.008393] thread number 12 being created. user :notice: [ +0.008519] thread number 13 being created. user :notice: [ +0.008518] thread number 14 being created. user :notice: [ +0.008266] thread number 15 being created. user :notice: [ +0.009492] Starting FWQ_CORE with work_length = 262144 user :notice: [ +0.010539] Starting FWQ_CORE with work_length = 262144 user :notice: [ +0.010499] Starting FWQ_CORE with work_length = 262144 user :notice: [ +0.010492] Starting FWQ_CORE with work_length = 262144 user :notice: [ +0.010473] Starting FWQ_CORE with work_length = 262144 user :notice: [ +0.010255] Starting FWQ_CORE with work_length = 262144 user :notice: [ +0.010525] Starting FWQ_CORE with work_length = 262144 user :notice: [ +0.013377] Starting FWQ_CORE with work_length = 262144 user :notice: [ +0.013653] Starting FWQ_CORE with work_length = 262144 user :notice: [ +0.013755] Starting FWQ_CORE with work_length = 262144 user :notice: [ +0.013936] Starting FWQ_CORE with work_length = 262144 user :notice: [ +0.013843] Starting FWQ_CORE with work_length = 262144 user :notice: [ +0.013884] Starting FWQ_CORE with work_length = 262144 user :notice: [ +0.013685] Starting FWQ_CORE with work_length = 262144 user :notice: [ +0.013835] Starting FWQ_CORE with work_length = 262144 user :notice: [ +0.013927] Starting FWQ_CORE with work_length = 262144
Best Regards, Rong Chen
| |