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2025-11-09 - 13:01

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #8

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: 50 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 792 highest latencies:
System rack9slot8s.osadl.org (updated Sun Nov 09, 2025 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
268989911832,0cyclictest9581-21ssh00:28:580
268989911828,0cyclictest4608-21sshd20:14:200
268989911731,0cyclictest11366-21awk20:59:540
268989911728,0cyclictest32116-21ssh00:08:020
268989911726,0cyclictest13342-21ssh23:28:240
268989911629,0cyclictest30061-21munin-run22:54:590
268989911530,0cyclictest23252-21ssh21:31:380
268989911530,0cyclictest12860-21munin-run21:09:540
268989911526,0cyclictest12849-21diskmemload22:38:420
268989911525,0cyclictest7601-21rm22:07:040
268989911512,0cyclictest26852-21sshd21:39:230
268989911428,0cyclictest14497-21ssh22:21:380
268989911427,0cyclictest3996-21ssh23:08:300
268989911427,0cyclictest20617-21ssh23:43:440
268989911412,0cyclictest5630-21kworker/u2:223:19:580
268989911328,0cyclictest24369-21ssh23:51:370
268989911328,0cyclictest17549-21sh22:28:120
268989911327,0cyclictest15859-21ssh23:33:450
268989911326,0cyclictest16266-21ssh21:16:560
268989911325,0cyclictest10516-21ssh00:30:500
268989911324,0cyclictest6198-21kworker/u2:600:40:010
268989911228,0cyclictest2444-21ssh00:13:560
268989911226,0cyclictest21423-21ssh23:45:180
268989911133,0cyclictest12851-21latency_hist21:09:570
268989911129,0cyclictest9154-21apt20:44:540
268989911128,0cyclictest27535-21ssh23:58:230
268989911127,0cyclictest6354-21sshd20:25:190
268989911126,0cyclictest1691-21sshd19:55:190
268989911124,0cyclictest18890-21ssh21:22:260
268989911111,0cyclictest32641-21ssh21:51:250
268989911027,0cyclictest5296-21kworker/u2:200:25:020
268989911011,0cyclictest13563-21ssh22:19:570
268989910920,0cyclictest20007-21sh22:33:280
268989910919,0cyclictest14858-21sshd21:57:230
268989910831,0cyclictest28846-21sh21:43:300
268989910828,0cyclictest26850-21kworker/u2:419:14:570
268989910811,0cyclictest17771-21ssh23:37:480
268989910729,0cyclictest29620-21sh00:02:440
268989910729,0cyclictest27394-21sh22:49:180
268989910729,0cyclictest20752-21sh21:26:200
26898991069,0cyclictest9634-21ssh22:11:240
268989910630,0cyclictest4969-21sh00:19:180
268989910623,0cyclictest81950irq/47-4a10000023:21:510
268989910623,0cyclictest81950irq/47-4a10000021:47:430
268989910610,0cyclictest30185-21ssh22:55:020
2677121060,0chrt26379-21kworker/u2:019:09:140
268989910523,0cyclictest1121-21ssh23:02:200
268989910411,0cyclictest6391-21ssh22:04:340
268989910410,0cyclictest2424-21dpkg19:59:570
268989910326,0cyclictest81950irq/47-4a10000023:14:220
268989910318,0cyclictest7661-21apt20:34:530
268989910318,0cyclictest3657-21runrttasks20:07:330
268989910225,0cyclictest5804-21kworker/u2:420:23:440
268989910225,0cyclictest23150-21grep22:40:010
268989910223,0cyclictest30263-21cron19:29:530
268989910223,0cyclictest26966-21latency_hist19:09:510
268989910222,0cyclictest971-21runrttasks19:50:280
268989910126,0cyclictest7175-21kworker/u2:221:00:010
268989910124,0cyclictest27150-21kworker/u2:519:29:110
268989910025,0cyclictest7175-21kworker/u2:220:47:310
268989910025,0cyclictest3526-21kworker/u2:120:14:560
268989910022,0cyclictest29852-21kworker/u2:119:37:170
268989910019,0cyclictest9968-21latency_hist20:49:550
26898999925,0cyclictest6426-21kworker/u2:620:35:120
26898999820,0cyclictest27150-21kworker/u2:519:20:190
26898999621,0cyclictest32124-21kworker/u2:619:45:030
26898999235,0cyclictest101ktimersoftd/019:43:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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