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2026-06-05 - 09:02
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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
Characteristics of the 100 highest latencies:
System rack7slot1.osadl.org (updated Fri Jun 05, 2026 00:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1678621230,1sleep325468-21stress23:15:493
4420211552,24sleep00-21swapper/019:05:260
4420211552,24sleep00-21swapper/019:05:260
4535211452,20sleep30-21swapper/319:06:503
4535211452,20sleep30-21swapper/319:06:503
461929050,35sleep10-21swapper/119:07:521
461929050,35sleep10-21swapper/119:07:521
449928961,23sleep20-21swapper/219:06:252
449928961,23sleep20-21swapper/219:06:252
4887994111,27cyclictest0-21swapper/121:22:481
102962400,1sleep125470-21stress21:48:001
86632395,14sleep20-21swapper/219:15:152
4887993914,22cyclictest0-21swapper/122:40:341
4887993914,22cyclictest0-21swapper/122:40:341
4887993911,26cyclictest0-21swapper/123:17:161
488699399,23cyclictest0-21swapper/019:24:040
250642398,12sleep10-21swapper/121:05:581
204242399,12sleep10-21swapper/119:40:371
120772397,13sleep10-21swapper/120:36:261
4887993814,17cyclictest0-21swapper/123:35:221
488699389,22cyclictest0-21swapper/021:05:050
4886993818,14cyclictest0-21swapper/019:55:410
4886993810,21cyclictest0-21swapper/019:40:170
68872376,12sleep10-21swapper/119:13:101
4887993715,20cyclictest0-21swapper/121:10:081
4887993715,19cyclictest0-21swapper/121:30:301
4887993714,21cyclictest0-21swapper/123:20:231
488699379,22cyclictest0-21swapper/019:35:470
4886993710,24cyclictest0-21swapper/023:00:350
4886993710,21cyclictest0-21swapper/019:45:210
4886993710,17cyclictest0-21swapper/020:10:120
35402375,13sleep20-21swapper/220:18:192
183982375,13sleep20-21swapper/219:37:052
171622370,1sleep125468-21stress00:33:281
164742374,13sleep20-21swapper/219:35:002
143282375,13sleep20-21swapper/220:42:332
141392374,13sleep10-21swapper/120:40:231
78202364,13sleep20-21swapper/220:27:052
488999367,26cyclictest0-21swapper/323:00:373
4889993615,19cyclictest0-21swapper/323:54:013
4889993615,19cyclictest0-21swapper/323:54:013
488799366,27cyclictest0-21swapper/100:35:121
488799366,27cyclictest0-21swapper/100:35:121
4887993614,16cyclictest0-21swapper/121:50:071
488699369,21cyclictest0-21swapper/019:11:410
488699366,20cyclictest0-21swapper/019:18:340
4886993610,19cyclictest0-21swapper/021:03:040
315472364,13sleep20-21swapper/220:08:412
313532364,12sleep30-21swapper/320:06:173
249702364,13sleep30-21swapper/319:52:583
187522363,13sleep30-21swapper/320:53:173
164292365,13sleep00-21swapper/020:46:160
143022364,13sleep30-21swapper/320:42:143
139582365,13sleep00-21swapper/019:26:160
96352354,11sleep30-21swapper/319:16:093
78772355,12sleep10-21swapper/120:27:481
4889993513,19cyclictest0-21swapper/321:33:373
488899356,18cyclictest0-21swapper/223:30:302
4888993515,17cyclictest0-21swapper/221:38:492
488799359,23cyclictest0-21swapper/122:45:021
488699359,19cyclictest0-21swapper/020:20:220
488699356,20cyclictest0-21swapper/020:50:340
488699354,20cyclictest0-21swapper/019:30:060
4886993510,19cyclictest0-21swapper/020:05:060
36522355,12sleep10-21swapper/120:19:421
253772353,13sleep30-21swapper/321:09:533
225902354,13sleep10-21swapper/119:45:301
165702353,13sleep30-21swapper/320:47:593
120792353,13sleep20-21swapper/219:24:382
96762344,12sleep10-21swapper/119:16:351
488999349,22cyclictest0-21swapper/321:11:493
488999346,25cyclictest0-21swapper/322:17:403
4889993416,16cyclictest0-21swapper/323:30:453
4889993412,19cyclictest0-21swapper/321:17:253
4888993416,16cyclictest0-21swapper/221:25:322
4888993416,15cyclictest0-21swapper/222:13:142
4888993416,15cyclictest0-21swapper/222:03:482
4888993416,15cyclictest0-21swapper/222:03:482
488799349,22cyclictest0-21swapper/122:25:341
488799346,14cyclictest0-21swapper/122:55:261
4887993415,12cyclictest0-21swapper/123:55:371
488699349,22cyclictest0-21swapper/021:49:290
488699349,22cyclictest0-21swapper/000:00:160
488699347,25cyclictest0-21swapper/019:54:300
488699347,18cyclictest0-21swapper/020:36:580
488699345,15cyclictest0-21swapper/000:15:010
4886993415,16cyclictest0-21swapper/000:35:230
4886993415,16cyclictest0-21swapper/000:35:230
4886993412,12cyclictest0-21swapper/020:28:030
4886993411,21cyclictest0-21swapper/021:25:000
226882343,13sleep20-21swapper/219:46:432
213292345,9sleep20-21swapper/221:00:092
207352342,13sleep20-21swapper/219:44:312
121072345,9sleep20-21swapper/220:36:442
99572335,9sleep30-21swapper/320:31:473
4889993314,16cyclictest0-21swapper/322:10:173
488899339,22cyclictest0-21swapper/220:50:282
488899338,23cyclictest0-21swapper/220:03:402
488899338,23cyclictest0-21swapper/219:54:302
4888993320,12cyclictest0-21swapper/220:12:402
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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