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2026-07-02 - 11:54
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackeslot8.osadl.org (updated Thu Jul 02, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
35882952330,7sleep134-21ksoftirqd/120:55:181
3446974993330,1cyclictest0-21swapper/319:45:013
3446974992825,1cyclictest0-21swapper/321:19:593
3446974992421,1cyclictest0-21swapper/323:55:253
3446974992421,1cyclictest0-21swapper/321:20:113
3446974992320,1cyclictest0-21swapper/319:20:013
344697499231,17cyclictest3584428-21chrt20:55:133
3446974992219,1cyclictest0-21swapper/323:20:013
3446974992219,1cyclictest0-21swapper/320:05:143
344697499221,15cyclictest3713963-21taskset22:20:013
3446974992118,1cyclictest0-21swapper/320:20:143
3446974992118,1cyclictest0-21swapper/300:35:013
344697499211,16cyclictest3577729-21turbostat20:50:013
3446974992017,1cyclictest0-21swapper/323:30:183
3446974992017,1cyclictest0-21swapper/323:00:243
3446974992017,1cyclictest0-21swapper/322:25:223
3446974992017,1cyclictest0-21swapper/321:00:113
344697499201,15cyclictest3768619-21taskset22:53:523
344697499201,14cyclictest3705615-21taskset22:13:523
344697499201,14cyclictest3681965-21taskset21:59:003
344697499201,14cyclictest3634953-21turbostat21:29:593
344697499201,14cyclictest3513246-21taskset19:57:003
344697499192,13cyclictest3673811-21taskset21:53:233
3446974991917,1cyclictest0-21swapper/323:05:273
3446974991916,1cyclictest0-21swapper/323:40:163
3446974991916,1cyclictest0-21swapper/322:05:133
3446974991916,1cyclictest0-21swapper/321:40:053
3446974991916,1cyclictest0-21swapper/319:49:593
3446974991916,1cyclictest0-21swapper/300:00:123
344697499191,14cyclictest3934427-21turbostat00:40:013
344697499191,14cyclictest3848186-21taskset23:45:003
344697499191,14cyclictest3500836-21taskset19:50:033
344697499190,15cyclictest3744960-21taskset22:38:543
344697499188,7cyclictest38183072sleep323:25:173
3446974991816,1cyclictest0-21swapper/319:20:163
3446974991815,1cyclictest0-21swapper/322:20:183
3446974991815,1cyclictest0-21swapper/322:00:033
3446974991815,1cyclictest0-21swapper/320:35:193
3446974991815,1cyclictest0-21swapper/300:20:063
3446974991814,1cyclictest0-21swapper/323:20:133
344697499181,13cyclictest3862004-21taskset23:50:343
344697499181,13cyclictest3737460-21taskset22:34:563
344697499181,13cyclictest3552821-21taskset20:30:153
344697499181,13cyclictest3551769-21taskset20:26:193
344697499181,13cyclictest3532477-21taskset20:11:503
344697499181,13cyclictest3519752-21taskset20:02:413
344697499181,13cyclictest3453031-21taskset19:11:423
344697499181,12cyclictest3532991-21chrt20:15:123
344697499177,7cyclictest38852152sleep300:05:303
3446974991714,1cyclictest0-21swapper/300:15:183
344697499171,13cyclictest3917563-21taskset00:26:473
344697499171,13cyclictest3759460-21taskset22:45:273
344697499171,13cyclictest3745676-21taskset22:40:093
344697499171,13cyclictest3566526-21taskset20:40:173
344697499171,13cyclictest3481168-21taskset19:33:313
344697499171,12cyclictest3838416-21taskset23:35:423
344697499171,12cyclictest3664896-21taskset21:45:283
344697499171,12cyclictest3643078-21taskset21:35:023
344697499171,12cyclictest3605591-21taskset21:10:173
344697499171,12cyclictest3597323-21chrt21:05:123
344697499171,12cyclictest3487362-21taskset19:35:463
344697499171,12cyclictest3473885-21taskset19:25:203
344697499166,7cyclictest37723132sleep322:55:183
344697499161,12cyclictest3893613-21taskset00:10:473
344697499161,12cyclictest3641598-21taskset21:31:383
344697499161,12cyclictest3577974-21taskset20:50:083
344697499161,11cyclictest3792957-21taskset23:10:053
36195762152,10sleep03619670-21/usr/sbin/munin21:20:130
35652502151,6sleep23564986-21sendmail-msp20:40:142
34416902151,10sleep23442292-21cut19:05:152
37604222141,10sleep13760428-21ssh22:48:071
36985132140,6sleep03698612-21expr22:10:120
38866892131,9sleep13886695-21ssh00:08:301
37676102131,9sleep13767616-21ssh22:51:031
36890912134,6sleep13689097-21sh22:01:431
38234252127,2sleep10-21swapper/123:28:031
38024452120,9sleep13804013-21tr23:15:161
36984612120,2sleep20-21swapper/222:10:102
36897942121,8sleep23689799-21sh22:03:402
36496352120,9sleep13649641-21ssh21:37:061
35913292120,9sleep13592241-21irqstats21:00:171
35511162121,3sleep23551153-21ntpq20:25:232
35005482120,9sleep03500594-21sqv19:50:000
38633512110,4sleep13838799-21kworker/u16:4+rpciod23:54:261
37745972110,8sleep23774642-21ld22:55:212
37217602111,7sleep13721925-21date22:25:001
35192872110,8sleep13519554-21head20:00:271
344697499119,1cyclictest0-21swapper/319:10:013
38875952102,4sleep13887617-21apt-get00:10:131
38702292100,7sleep23870235-21sh23:56:392
38550752100,7sleep13855081-21ssh23:48:091
38478952100,8sleep23603422-21diskmemload23:44:572
38087262100,7sleep03808765-21ssh23:20:130
36285872100,7sleep03629264-21cut21:25:180
35455732106,2sleep2431ktimers/220:24:412
35206582100,3sleep0222-21plymouthd20:05:160
35202392100,7sleep13520386-21df20:05:131
34830012100,7sleep23484683-21kthreadcore19:35:192
34819532100,7sleep03482048-21irqcore19:35:170
34686912101,5sleep23468724-21apt-get19:25:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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