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2026-01-09 - 09:48

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #5

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.
Unexpectedly long latencies may be caused by SMIs
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 rackeslot5s.osadl.org (updated Fri Jan 09, 2026 00:44:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2083899260,25cyclictest313-21systemd-journal00:40:000
2084399242,21cyclictest6234-21grep23:05:002
2084399240,22cyclictest313-21systemd-journal21:35:012
20845992322,0cyclictest0-21swapper/322:56:313
20845992321,1cyclictest19714-21apt-get21:21:323
2084599231,21cyclictest0-21swapper/319:45:003
2084599230,22cyclictest17923-21turbostat.cron00:35:003
2084399230,22cyclictest5250-21cron19:45:002
2084399230,22cyclictest24879-21dump-pmu-power20:25:002
2084399230,22cyclictest17919-21apt00:35:002
20839992321,1cyclictest0-21swapper/121:36:321
2083899230,22cyclictest605-21avahi-daemon22:40:010
2083899230,22cyclictest25654-21sendmail19:20:010
20845992220,1cyclictest32075-21idleruntime-cro20:40:003
20845992220,1cyclictest0-21swapper/322:11:313
20845992220,1cyclictest0-21swapper/320:45:013
20845992220,1cyclictest0-21swapper/300:25:003
2084599220,21cyclictest26528-21turbostat.cron21:35:013
2084599220,21cyclictest0-21swapper/321:36:323
2084599220,1cyclictest606-21dbus-daemon20:25:003
2084599220,1cyclictest18641-21cut23:30:013
2084599220,1cyclictest0-21swapper/321:11:313
20843992221,1cyclictest0-21swapper/220:56:292
20843992220,1cyclictest32067-21sh20:40:002
20843992219,2cyclictest22472-21grep20:20:012
2084399220,21cyclictest5921-21perf00:10:012
2084399220,21cyclictest18961-21apt-get22:26:312
2084399220,21cyclictest10833-21apt-get19:56:302
2084399220,1cyclictest18634-21perf23:30:012
2084399220,1cyclictest14898-21apt-get21:11:312
20839992221,1cyclictest23824-21apt-get23:41:321
20839992220,1cyclictest14117-21apt-get21:10:031
20839992220,1cyclictest0-21swapper/119:35:001
20839992219,2cyclictest26173-21cron22:40:011
20839992219,2cyclictest16161-21cron22:20:001
20839992218,3cyclictest13392-21munin-run22:15:001
2083999220,21cyclictest24891-21wc20:25:001
2083999220,21cyclictest0-21swapper/123:56:331
2083999220,21cyclictest0-21swapper/122:55:001
2083999220,21cyclictest0-21swapper/122:31:321
2083999220,21cyclictest0-21swapper/121:55:011
2083999220,21cyclictest0-21swapper/121:50:011
2083999220,0cyclictest0-21swapper/121:31:311
20838992222,0cyclictest0-21swapper/022:26:310
2083899220,22cyclictest0-21swapper/022:16:310
2083899220,21cyclictest956-21turbostat22:55:000
2083899220,21cyclictest26573-21apt-get22:41:300
2083899220,21cyclictest2503-21apt-get20:46:300
2083899220,21cyclictest11031-21apt-get23:15:020
2083899220,21cyclictest11031-21apt-get23:15:020
2083899220,21cyclictest0-21swapper/022:11:310
2083899220,21cyclictest0-21swapper/021:26:300
2083899220,21cyclictest0-21swapper/021:00:010
2083899220,21cyclictest0-21swapper/000:01:330
2083899220,0cyclictest0-21swapper/022:01:320
2083899220,0cyclictest0-21swapper/020:06:300
20845992121,0cyclictest0-21swapper/319:31:313
20845992119,1cyclictest23460-21awk23:40:003
20845992119,1cyclictest22475-21cron20:20:013
20845992119,1cyclictest18297-21apt-get00:36:323
20845992119,1cyclictest1320-21latency_hist21:50:013
2084599210,21cyclictest0-21swapper/322:01:323
2084599210,20cyclictest0-21swapper/319:51:303
2084599210,20cyclictest0-21swapper/319:16:293
2084599210,0cyclictest0-21swapper/322:26:313
20843992120,1cyclictest2090-21perf20:45:012
20843992120,1cyclictest0-21swapper/221:01:302
20843992119,1cyclictest23445-21munin-run23:40:002
20843992119,1cyclictest1018-21perf00:00:012
20843992119,1cyclictest0-21swapper/221:50:012
2084399210,20cyclictest0-21swapper/223:51:312
2084399210,20cyclictest0-21swapper/222:01:322
2084399210,20cyclictest0-21swapper/219:26:302
2084399210,1cyclictest0-21swapper/200:05:012
2084399210,0cyclictest4899-21apt-get20:51:312
2084399210,0cyclictest4899-21apt-get20:51:312
2084399210,0cyclictest0-21swapper/219:51:302
20839992121,0cyclictest0-21swapper/120:41:301
20839992120,0cyclictest6570-21apt-get22:01:311
20839992119,1cyclictest0-21swapper/123:50:021
20839992119,1cyclictest0-21swapper/121:05:011
2083999210,1cyclictest23588-21apt-get19:16:291
2083999210,1cyclictest11113-21apt-get00:21:311
2083999210,0cyclictest0-21swapper/123:06:291
2083999210,0cyclictest0-21swapper/100:16:321
20838992120,1cyclictest62550irq/127-eno123:36:310
20838992120,1cyclictest28248-21apt-get23:50:020
20838992119,1cyclictest12881-21basename20:00:010
2083899210,20cyclictest0-21swapper/022:56:310
2083899210,20cyclictest0-21swapper/020:36:300
2083899210,20cyclictest0-21swapper/019:46:280
2083899210,1cyclictest28956-21turbostat21:40:010
2083899210,0cyclictest30801-21apt-get19:31:310
2083899210,0cyclictest27654-21apt-get20:31:310
2083899210,0cyclictest26008-21apt-get19:21:310
2083899210,0cyclictest21195-21apt-get19:11:300
2083899210,0cyclictest0-21swapper/022:31:320
2083899210,0cyclictest0-21swapper/000:11:310
20845992020,0cyclictest17292-21apt-get21:16:313
20845992020,0cyclictest1493-21apt-get00:01:323
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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