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2026-07-11 - 18:26

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, 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.
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 50 highest latencies:
System rack7slot7s.osadl.org (updated Sat Jul 11, 2026 12:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
327029985,9sleep00-21swapper/007:07:100
320128961,9sleep30-21swapper/307:06:163
342628875,9sleep20-21swapper/207:09:122
135227858,6sleep10-21swapper/107:05:061
82692670,0sleep20-21swapper/209:16:022
200622620,0sleep30-21swapper/312:37:113
267502580,0sleep00-21swapper/009:27:260
310272290,0sleep20-21swapper/210:47:502
3583992826,1cyclictest16058-21pmu-power12:15:223
357899275,21cyclictest24459-21awk12:20:221
3576992727,0cyclictest0-21swapper/009:49:510
3583992625,1cyclictest0-21swapper/310:08:553
3576992620,5cyclictest13-21ksoftirqd/010:04:410
358199240,24cyclictest0-21swapper/212:26:392
358199240,24cyclictest0-21swapper/210:32:152
358199240,0cyclictest0-21swapper/211:53:372
357699246,8cyclictest13-21ksoftirqd/011:14:340
3583992317,5cyclictest0-21swapper/310:59:513
357899230,19cyclictest0-21swapper/109:30:041
3576992319,3cyclictest21852-21cron08:55:010
358399221,19cyclictest22166-21sh10:42:273
3576992216,1cyclictest0-21swapper/012:22:310
358399210,19cyclictest26406-21kworker/3:111:00:033
358199217,7cyclictest0-21swapper/210:20:112
3581992120,1cyclictest0-21swapper/209:52:472
358199210,21cyclictest0-21swapper/210:18:102
358199210,21cyclictest0-21swapper/210:18:102
358199210,21cyclictest0-21swapper/209:28:332
3578992120,1cyclictest25-21ksoftirqd/110:18:501
3578992120,1cyclictest25-21ksoftirqd/110:18:501
357899210,20cyclictest0-21swapper/110:51:211
357899210,1cyclictest0-21swapper/112:14:341
357899210,1cyclictest0-21swapper/112:14:341
357899210,0cyclictest0-21swapper/109:22:091
3576992110,11cyclictest0-21swapper/010:39:140
358399200,19cyclictest26406-21kworker/3:110:54:293
3581992018,1cyclictest0-21swapper/209:44:232
358199200,1cyclictest0-21swapper/211:15:452
3578992018,1cyclictest19751-21apt-get08:50:131
357899201,3cyclictest0-21swapper/112:05:141
357899200,0cyclictest0-21swapper/109:28:391
3576992015,3cyclictest13-21ksoftirqd/010:50:210
358399190,18cyclictest0-21swapper/310:45:343
3578991917,1cyclictest13894-21sed11:35:201
357899191,2cyclictest0-21swapper/109:53:221
3576991915,3cyclictest0-21swapper/012:35:160
3576991911,6cyclictest29010-21diskmemload09:23:240
358399180,17cyclictest0-21swapper/309:32:513
358199180,1cyclictest0-21swapper/211:34:422
358199180,18cyclictest0-21swapper/212:38:392
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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