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2026-05-24 - 12:59

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 Sun May 24, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
116872116104,6sleep30-21swapper/319:07:583
11128211187,19sleep00-21swapper/019:05:510
10450210986,15sleep20-21swapper/219:05:132
1180029584,6sleep10-21swapper/119:09:251
16762790,0sleep30-21swapper/300:38:133
111912710,0sleep10-21swapper/122:32:321
130342580,4sleep01187199cyclictest22:00:370
11871993614,3cyclictest28311-21ssh21:10:120
20602220,1sleep11187299cyclictest00:05:001
1187299220,20cyclictest0-21swapper/100:30:111
1187199221,19cyclictest0-21swapper/021:45:140
1187299210,19cyclictest0-21swapper/119:10:111
1187199211,3cyclictest27967-21diskmemload23:20:120
319252200,1sleep1221ktimersoftd/122:20:181
1187499200,18cyclictest0-21swapper/323:25:103
11872992014,5cyclictest28221-21sh21:10:051
1187299200,18cyclictest0-21swapper/123:25:101
1187199200,18cyclictest0-21swapper/022:15:130
1187199200,18cyclictest0-21swapper/020:25:110
11873991714,2cyclictest3384-21ssh22:25:122
11873991714,2cyclictest26072-21kworker/u8:022:06:012
11873991714,2cyclictest11716-21kworker/u8:221:52:042
11873991714,2cyclictest11716-21kworker/u8:221:43:042
11873991714,2cyclictest10166-21kworker/u8:322:04:052
1187399170,12cyclictest0-21swapper/223:04:052
1187399170,12cyclictest0-21swapper/223:04:042
11872991712,3cyclictest0-21swapper/121:47:321
1187499161,3cyclictest0-21swapper/323:20:163
1187499161,13cyclictest2687-21ssh21:16:093
11874991611,3cyclictest0-21swapper/322:17:073
11873991613,2cyclictest7678-21kworker/u8:219:13:052
11873991613,2cyclictest3018-21kworker/u8:121:18:012
11873991613,2cyclictest28518-21kworker/u8:100:03:042
11873991613,2cyclictest26138-21kworker/u8:122:23:052
11873991613,2cyclictest24214-21kworker/u8:120:58:052
11873991613,2cyclictest2113-21kworker/u8:000:06:042
11873991613,2cyclictest17475-21kworker/u8:123:48:052
11873991613,2cyclictest10906-21kworker/u8:222:37:052
1187399160,11cyclictest0-21swapper/223:53:042
1187399160,10cyclictest0-21swapper/221:10:052
11871991611,3cyclictest0-21swapper/000:10:180
269822151,3sleep226992-21ssh23:22:372
1187499151,3cyclictest0-21swapper/323:41:243
1187499151,2cyclictest0-21swapper/322:45:163
1187499151,12cyclictest27967-21diskmemload21:30:373
1187499151,12cyclictest0-21swapper/323:10:053
11874991510,3cyclictest0-21swapper/300:30:143
1187499150,3cyclictest7410-21fschecks_count21:55:153
1187399151,2cyclictest0-21swapper/223:43:042
11873991512,2cyclictest29918-21kworker/u8:000:39:052
11873991512,2cyclictest28518-21kworker/u8:100:20:052
11873991512,2cyclictest26138-21kworker/u8:122:32:042
11873991512,2cyclictest25310-21kworker/u8:223:14:052
11873991512,2cyclictest24234-21kworker/u8:021:32:042
11873991512,2cyclictest24214-21kworker/u8:121:06:042
11873991512,2cyclictest24214-21kworker/u8:120:27:042
11873991512,2cyclictest24214-21kworker/u8:120:14:012
11873991512,2cyclictest23687-21kworker/u8:223:55:052
11873991512,2cyclictest2113-21kworker/u8:000:11:052
11873991512,2cyclictest19222-21kworker/u8:023:31:052
11873991512,2cyclictest18004-21kworker/u8:122:45:052
11873991512,2cyclictest13524-21kworker/u8:020:37:042
11873991512,2cyclictest13395-21kworker/u8:200:19:042
11873991512,2cyclictest11611-21kworker/u8:019:23:052
11873991510,3cyclictest318-21fschecks_time22:55:142
11873991510,3cyclictest0-21swapper/223:35:132
1187399150,10cyclictest0-21swapper/223:07:052
11872991512,2cyclictest221ktimersoftd/120:36:021
11872991511,2cyclictest0-21swapper/121:01:001
11872991510,3cyclictest10490-21fschecks_count20:25:131
1187299150,13cyclictest0-21swapper/123:46:121
1187199151,12cyclictest23335-21ssh23:52:360
11871991510,3cyclictest0-21swapper/021:55:530
1187199150,13cyclictest27967-21diskmemload00:26:370
1187499149,3cyclictest0-21swapper/300:20:153
1187499141,2cyclictest24421-21ssh22:12:473
11874991411,2cyclictest0-21swapper/300:14:083
1187499141,11cyclictest0-21swapper/323:03:273
1187499141,11cyclictest0-21swapper/323:03:263
1187499140,3cyclictest4843-21ssh23:33:273
1187499140,12cyclictest25398-21ssh00:29:213
1187499140,12cyclictest13423-21python22:01:053
1187499140,12cyclictest0-21swapper/322:06:013
11873991411,2cyclictest4712-21kworker/u8:022:50:052
11873991411,2cyclictest24214-21kworker/u8:120:42:042
11873991411,2cyclictest24214-21kworker/u8:120:08:052
11873991411,2cyclictest24214-21kworker/u8:120:02:042
11873991411,2cyclictest24214-21kworker/u8:119:51:052
11873991411,2cyclictest18294-21kworker/u8:219:30:042
11873991411,2cyclictest11611-21kworker/u8:019:38:052
11873991411,2cyclictest10906-21kworker/u8:222:40:042
1187399140,13cyclictest0-21swapper/221:36:052
1187399140,13cyclictest0-21swapper/220:45:052
1187399140,12cyclictest30669-21ps21:45:222
1187299149,3cyclictest11998-21aten2.4_r3power00:15:141
11872991411,2cyclictest0-21swapper/123:24:521
11872991411,2cyclictest0-21swapper/122:50:121
11872991411,2cyclictest0-21swapper/122:37:221
11872991411,2cyclictest0-21swapper/121:27:121
11872991411,2cyclictest0-21swapper/100:13:321
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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