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2025-12-11 - 13:45

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, slot #7

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack2slot7s.osadl.org (updated Thu Dec 11, 2025 12:39:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3841222996355,5cyclictest3910975-21cron10:00:012
3841220995935,20cyclictest3974502-40mandb11:34:370
3841222995445,6cyclictest3860711-21true08:15:012
384122099541,40cyclictest3933892-21ssh10:34:240
3841221995143,5cyclictest3938256-21sshd10:40:021
3841221995143,5cyclictest3938256-21sshd10:40:021
3841222995040,6cyclictest956-21mta-sts-daemon11:24:352
3841222995040,6cyclictest956-21mta-sts-daemon11:24:352
3841220994819,24cyclictest0-21swapper/011:19:160
3841220994728,13cyclictest12450irq/32-eth009:54:230
3841221994640,4cyclictest0-21swapper/111:34:391
3841221994638,5cyclictest422-21dbus-daemon11:45:011
3841222994534,6cyclictest0-21swapper/212:14:272
3841221994537,5cyclictest3866715-21systemd-run08:35:011
3841220994532,9cyclictest3937445-21ssh10:39:290
3841220994532,9cyclictest3937445-21ssh10:39:290
3841220994435,5cyclictest3949109-21sshd10:56:290
3841220994415,9cyclictest3977582-21ssh11:39:270
3841220994415,9cyclictest3977582-21ssh11:39:270
3841222994336,4cyclictest3968498-21kworker/u8:0-xprtiod11:34:332
3841222994334,6cyclictest422-21dbus-daemon11:40:012
3841222994334,6cyclictest422-21dbus-daemon11:40:012
384122199433,32cyclictest3917009-21ssh10:09:241
3841222994232,7cyclictest422-21dbus-daemon09:50:012
3841221994233,6cyclictest1-21systemd12:30:021
3841221994232,6cyclictest3998016-21ntp_kernel_pll_12:09:271
3841220994221,13cyclictest3984987-21unixbench_multi11:49:400
3841220994215,7cyclictest3854092-21ntpq07:54:250
3841222994132,6cyclictest3897294-21tail09:39:372
3841220994125,9cyclictest3849615-21ntpq07:39:250
3841222994032,5cyclictest3958596-21cron11:10:012
3841222994032,5cyclictest3884508-21sh09:20:012
384122299401,31cyclictest3872184-21sshd08:54:282
3841221994032,5cyclictest3978439-21systemctl11:40:001
3841221994032,5cyclictest3978439-21systemctl11:40:001
3841221994031,6cyclictest2986655-21cups-browsed09:59:341
3841221994031,5cyclictest3962047-21idleruntime-cro11:15:011
3841221994027,8cyclictest3930570-21sh10:29:351
384122099408,12cyclictest3916968-21ntpq10:09:230
3841220994033,4cyclictest3904273-21latency_hist09:50:010
3841220994032,6cyclictest12450irq/32-eth011:54:280
3841220994021,15cyclictest421-21avahi-daemon12:17:360
3841220994015,4cyclictest3843681-21ntpq07:19:280
3841220994012,17cyclictest0-21swapper/009:34:270
3841220994011,20cyclictest0-21swapper/008:04:210
3841222993931,5cyclictest3881161-21latency_hist09:15:022
3841222993931,5cyclictest3877198-21diskmemload10:24:342
3841221993933,3cyclictest0-21swapper/111:00:021
3841221993932,3cyclictest0-21swapper/110:14:161
3841221993929,7cyclictest4021162-21sendmail12:40:011
3841220993929,7cyclictest3968218-21cut11:25:010
3841220993929,7cyclictest3968218-21cut11:25:010
3841220993925,8cyclictest4012334-21ntpq12:29:250
3841222993830,5cyclictest3877199-21ls09:10:012
3841221993830,5cyclictest3945023-21cron10:50:001
3841221993830,5cyclictest3945023-21cron10:50:001
3841221993830,5cyclictest3907623-21rm09:55:011
3841221993829,6cyclictest422-21dbus-daemon12:22:231
3841221993829,6cyclictest3894602-21systemd-run09:35:011
3841221993829,6cyclictest3880095-21missed_timers09:14:231
3841220993831,4cyclictest453-21systemd-logind08:40:020
3841220993830,5cyclictest422-21dbus-daemon07:45:020
3841220993829,6cyclictest2986626-21cupsd11:44:040
3841220993813,8cyclictest3999096-21sh12:10:130
3841220993810,10cyclictest3896862-21open_inodes09:39:320
3841222993732,2cyclictest0-21swapper/210:40:002
3841222993732,2cyclictest0-21swapper/210:40:002
3841222993729,5cyclictest4005816-21latency_hist12:20:022
3841222993729,5cyclictest266-21systemd-journal12:05:012
3841222993728,6cyclictest4017209-21latency_hist12:35:022
3841222993728,6cyclictest3848704-21munin-plugin-st07:35:002
3841222993726,7cyclictest2986655-21cups-browsed10:27:142
3841221993729,5cyclictest3941597-21cron10:45:001
3841221993729,5cyclictest3941597-21cron10:45:001
3841221993729,5cyclictest3874737-21fschecks_count09:04:151
384122199371,6cyclictest171rcu_preempt08:14:291
3841220993731,4cyclictest3863612-21tail08:24:340
3841220993730,4cyclictest3971500-21unixbench_singl11:29:370
3841220993729,3cyclictest0-21swapper/010:44:240
3841220993729,3cyclictest0-21swapper/010:44:240
3841220993727,6cyclictest12450irq/32-eth010:19:280
3841220993711,9cyclictest3890653-21grep09:29:330
3841220993710,8cyclictest3872157-21ntp_states08:54:260
384122299363,25cyclictest3917089-21ssh10:09:272
3841222993627,6cyclictest3950537-21uname10:59:172
3841221993630,3cyclictest0-21swapper/111:54:281
3841221993630,3cyclictest0-21swapper/109:20:011
3841221993630,3cyclictest0-21swapper/108:25:011
3841221993628,5cyclictest3850200-21cut07:40:011
384122099364,26cyclictest591-21sshd08:44:280
3841220993628,5cyclictest2986655-21cups-browsed10:01:580
3841220993627,6cyclictest3961447-21proc_pri11:14:320
3841220993626,6cyclictest3845158-21ntpq07:24:250
3841220993625,7cyclictest3852648-21ntpq07:49:250
3841220993622,10cyclictest3876702-21ntpq09:09:330
3841220993620,12cyclictest3994605-21ntpq12:04:250
3841220993613,7cyclictest3846247-21fschecks_count07:29:170
3841220993613,7cyclictest3846247-21fschecks_count07:29:170
3841220993612,8cyclictest3866742-21cat08:35:010
384122099361,18cyclictest3883600-21ssh09:19:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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