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2025-08-29 - 12:02

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 Fri Aug 29, 2025 00:40:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3847738996855,7cyclictest0-21swapper/222:33:322
3847738996855,7cyclictest0-21swapper/222:33:322
3847737996853,9cyclictest2107300-21cups-browsed23:58:221
3847737996853,9cyclictest2107300-21cups-browsed23:58:221
3847736995816,31cyclictest3961229-21ssh22:58:260
3847737995621,29cyclictest422-21dbus-daemon21:08:301
3847738995040,6cyclictest4016469-21latency_hist00:15:022
3847736994939,7cyclictest4002442-21cron23:55:010
3847736994938,8cyclictest3849241-21systemd-run19:15:020
3847736994921,24cyclictest12550irq/33-eth022:33:310
3847736994921,24cyclictest12550irq/33-eth022:33:310
3847737994828,15cyclictest3893548-21sh21:23:311
384773799473,34cyclictest3953227-21ssh22:47:431
3847736994738,5cyclictest151ktimers/020:53:260
384773799469,28cyclictest3925702-21ssh22:08:331
3847736994633,9cyclictest12550irq/33-eth022:47:430
3847737994538,4cyclictest3966132-21cron23:05:011
3847737994537,5cyclictest3898246-21munin-run21:30:011
3847737994436,5cyclictest3976999-21sendmail23:20:011
3847737994435,6cyclictest3937693-21latency_hist22:25:021
3847737994435,6cyclictest3937693-21latency_hist22:25:021
3847737994431,10cyclictest3904698-21timerwakeupswit21:38:421
3847738994333,6cyclictest3941160-21latency_hist22:30:022
3847738994333,6cyclictest3941160-21latency_hist22:30:022
3847738994326,5cyclictest0-21swapper/222:05:012
3847738994233,6cyclictest422-21dbus-daemon19:30:012
3847738994233,6cyclictest3987899-21ssh23:35:012
3847738994231,6cyclictest0-21swapper/200:03:302
3847738994225,13cyclictest3958159-21timerandwakeup22:53:402
3847737994236,3cyclictest0-21swapper/123:08:301
3847737994235,3cyclictest0-21swapper/123:53:381
3847736994233,6cyclictest0-21swapper/019:33:300
3847736994233,5cyclictest3933959-21munin-run22:20:010
3847736994233,5cyclictest3933959-21munin-run22:20:010
3847738994133,5cyclictest3867280-21latency_hist20:15:022
3847737994133,5cyclictest3916178-21kworker/u8:4+xprtiod22:00:021
3847737994133,5cyclictest3916178-21kworker/u8:4+xprtiod22:00:021
3847736994134,3cyclictest0-21swapper/021:38:280
3847738994032,5cyclictest3966141-21debian-sa123:05:012
3847738994015,17cyclictest351ktimers/219:43:222
3847737994030,7cyclictest4006163-21cups-browsed00:38:261
3847737994021,10cyclictest3883721-21diskmemload22:33:331
3847737994021,10cyclictest3883721-21diskmemload22:33:331
384773899396,22cyclictest657-21snmpd20:23:252
3847738993932,3cyclictest0-21swapper/220:20:012
3847738993931,5cyclictest3894650-21ssh21:25:012
3847737993933,3cyclictest0-21swapper/119:45:011
3847737993932,4cyclictest3867212-21munin-plugin-st20:15:011
3847737993931,5cyclictest698-21cron20:20:011
3847737993931,5cyclictest3996927-21aten2.4-expect23:48:171
3847736993925,11cyclictest0-21swapper/021:55:410
3847736993925,11cyclictest0-21swapper/021:55:410
3847738993830,5cyclictest4013182-21sh00:10:012
3847738993830,5cyclictest3915492-21unixbench_multi21:53:432
3847738993829,6cyclictest3930431-21idleruntime-cro22:15:012
3847738993829,5cyclictest0-21swapper/221:38:342
3847737993831,4cyclictest0-21swapper/120:53:291
3847737993829,6cyclictest453-21systemd-logind21:20:021
3847737993829,6cyclictest421-21avahi-daemon22:01:151
3847737993828,6cyclictest421-21avahi-daemon21:11:371
384773899375,19cyclictest3932856-21ssh22:18:362
384773899375,19cyclictest3932856-21ssh22:18:362
384773899373,26cyclictest4021991-21ssh00:23:312
3847738993729,3cyclictest0-21swapper/222:08:362
3847738993728,5cyclictest2107297-21cupsd21:41:582
384773899372,25cyclictest3947010-21ssh22:38:272
3847737993730,4cyclictest3983132-21proc_pri23:28:331
3847737993729,5cyclictest422-21dbus-daemon22:55:011
3847736993731,3cyclictest3882236-21kworker/u8:14-xprtiod21:15:010
3847736993729,5cyclictest3936559-21ssh22:23:410
3847736993729,5cyclictest3936559-21ssh22:23:410
3847738993628,4cyclictest0-21swapper/223:53:182
3847738993625,9cyclictest3875544-21needreboot20:43:222
3847738993625,7cyclictest2107300-21cups-browsed21:45:162
384773899362,27cyclictest3950584-21ssh22:43:232
3847737993629,5cyclictest3847735-21cyclictest22:15:011
3847737993629,4cyclictest955-21mta-sts-daemon00:09:441
3847737993628,5cyclictest3979355-21ntp_kernel_pll_23:23:271
3847737993627,6cyclictest0-21swapper/100:28:381
3847737993613,4cyclictest28-21ksoftirqd/119:48:251
3847737993610,4cyclictest28-21ksoftirqd/100:11:291
3847736993630,3cyclictest0-21swapper/019:53:250
3847736993630,3cyclictest0-21swapper/019:53:250
3847736993629,4cyclictest3896608-21tr21:28:200
3847736993628,5cyclictest3969950-21latency_hist23:10:030
384773699361,29cyclictest3907741-21ssh21:43:300
384773699361,28cyclictest3893639-21ssh21:23:340
3847737993513,5cyclictest28-21ksoftirqd/122:58:261
3847737993512,5cyclictest28-21ksoftirqd/122:35:191
3847736993529,3cyclictest0-21swapper/023:18:290
3847736993527,6cyclictest266-21systemd-journal23:40:010
3847736993525,8cyclictest3978763-21aten_r2power_vo23:23:160
3847736993523,9cyclictest3870215-21cron20:25:010
384773699352,27cyclictest3946993-21ssh22:38:260
3847736993517,5cyclictest171rcu_preempt21:15:170
384773899343,24cyclictest4031210-21ssh00:38:312
3847738993428,3cyclictest0-21swapper/223:48:272
3847738993427,4cyclictest0-21swapper/222:00:022
3847738993427,4cyclictest0-21swapper/222:00:022
3847738993427,3cyclictest0-21swapper/223:58:342
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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