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2025-12-11 - 07:01

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, slot #6

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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot6s.osadl.org (updated Thu Dec 11, 2025 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5225211597,12sleep30-21swapper/319:05:353
5284211497,12sleep20-21swapper/219:06:182
5223211494,15sleep10-21swapper/119:05:331
5509210380,18sleep00-21swapper/019:09:120
260012690,1sleep10-21swapper/122:20:151
260012690,1sleep10-21swapper/122:20:141
183722690,0sleep00-21swapper/022:12:070
560399210,19cyclictest0-21swapper/319:20:143
560199210,19cyclictest0-21swapper/119:20:131
5602992017,2cyclictest9840-21kworker/u8:023:47:052
560299200,15cyclictest0-21swapper/222:49:042
145842200,1sleep10-21swapper/122:41:141
5602991916,2cyclictest3260-21kworker/u8:223:12:042
5602991916,2cyclictest22294-21kworker/u8:122:56:072
5602991916,2cyclictest20030-21kworker/u8:200:33:052
5602991915,2cyclictest0-21swapper/220:10:122
560299191,17cyclictest0-21swapper/200:12:052
560299190,2cyclictest0-21swapper/219:45:152
560299190,14cyclictest0-21swapper/222:42:052
560299182,2cyclictest0-21swapper/222:25:042
5602991815,2cyclictest22294-21kworker/u8:122:52:042
560299181,2cyclictest0-21swapper/222:19:042
560299180,13cyclictest0-21swapper/223:17:042
50972180,0sleep30-21swapper/300:11:593
560399171,13cyclictest0-21swapper/322:20:163
560399171,13cyclictest0-21swapper/322:20:153
560399170,15cyclictest0-21swapper/321:00:123
5602991714,2cyclictest3916-21kworker/u8:121:58:052
5602991714,2cyclictest24210-21kworker/u8:120:09:042
5602991714,2cyclictest23499-21kworker/u8:000:23:052
5602991714,2cyclictest18736-21kworker/u8:122:13:052
5602991714,2cyclictest15101-21kworker/u8:219:16:042
560299171,14cyclictest21854-21diskmemload00:06:432
560299170,12cyclictest0-21swapper/219:31:052
560399161,13cyclictest0-21swapper/300:04:023
5602991613,2cyclictest5495-21kworker/u8:020:29:042
5602991613,2cyclictest5269-21kworker/u8:119:11:042
5602991613,2cyclictest31919-21kworker/u8:221:30:042
5602991613,2cyclictest28671-21kworker/u8:022:23:072
5602991613,2cyclictest28671-21kworker/u8:022:23:062
5602991613,2cyclictest25432-21kworker/u8:021:20:052
5602991613,2cyclictest14127-21kworker/u8:123:58:062
5602991613,2cyclictest13589-21kworker/u8:120:54:042
560299160,2cyclictest0-21swapper/221:26:042
560299160,14cyclictest0-21swapper/220:49:552
5601991611,3cyclictest29949-21wc21:50:281
5601991611,3cyclictest0-21swapper/123:00:011
560199160,3cyclictest26646-21latency_hist21:15:001
560199160,14cyclictest0-21swapper/123:45:191
560399151,3cyclictest32191-21df_abs23:00:133
560399151,3cyclictest21125-21ssh23:21:293
5603991510,3cyclictest1969-21cpuspeed_turbos20:20:133
5603991510,3cyclictest0-21swapper/322:56:143
560399150,13cyclictest0-21swapper/322:41:133
560299152,2cyclictest14127-21kworker/u8:123:32:052
5602991512,2cyclictest5495-21kworker/u8:020:37:032
5602991512,2cyclictest30629-21kworker/u8:023:26:052
5602991512,2cyclictest25432-21kworker/u8:021:18:042
5602991512,2cyclictest24210-21kworker/u8:119:58:052
5602991512,2cyclictest1702-21kworker/u8:221:09:042
5602991512,2cyclictest11574-21kworker/u8:119:28:042
5602991512,2cyclictest0-21swapper/200:16:432
560299151,12cyclictest8621-21munin-node2
560299151,12cyclictest4582-21sh23:38:402
560299151,12cyclictest0-21swapper/222:06:312
560299150,3cyclictest0-21swapper/223:40:002
560299150,2cyclictest0-21swapper/222:02:052
560299150,14cyclictest0-21swapper/221:48:052
560299150,10cyclictest0-21swapper/223:54:012
560199151,3cyclictest16000-21sh21:35:541
560099151,2cyclictest15389-21taskset22:10:000
5600991510,3cyclictest28274-21turbostat.cron21:49:550
560399149,3cyclictest0-21swapper/322:36:593
5603991411,2cyclictest0-21swapper/323:55:033
5603991411,2cyclictest0-21swapper/323:50:143
5603991410,2cyclictest24405-21munin-node3
5603991410,2cyclictest0-21swapper/323:45:113
5603991410,2cyclictest0-21swapper/300:05:083
560399140,2cyclictest0-21swapper/323:33:133
560399140,13cyclictest0-21swapper/322:06:523
560399140,12cyclictest21854-21diskmemload21:57:423
560399140,12cyclictest0-21swapper/323:40:183
560399140,12cyclictest0-21swapper/323:17:223
560399140,12cyclictest0-21swapper/321:31:023
560399140,12cyclictest0-21swapper/320:30:133
5602991411,2cyclictest25432-21kworker/u8:021:13:052
5602991411,2cyclictest23499-21kworker/u8:000:26:012
5602991411,2cyclictest17461-21kworker/u8:219:54:052
5602991411,2cyclictest15101-21kworker/u8:219:20:052
560299140,3cyclictest6955-21sh23:06:572
560299140,2cyclictest0-21swapper/223:01:042
560299140,2cyclictest0-21swapper/221:35:342
560299140,12cyclictest0-21swapper/223:20:542
5601991411,2cyclictest21854-21diskmemload23:14:391
5601991411,2cyclictest0-21swapper/123:55:091
5601991411,2cyclictest0-21swapper/121:26:531
560199140,2cyclictest0-21swapper/122:10:191
560199140,13cyclictest0-21swapper/122:16:181
560199140,12cyclictest0-21swapper/122:46:011
560099141,2cyclictest3360-21irqstats22:30:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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