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2026-06-10 - 01:51
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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 rack0slot5.osadl.org (updated Wed Jun 10, 2026 00:43:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3899575995630,42cyclictest0-21swapper/1121:13:253
38995709955620,535cyclictest0-21swapper/1023:05:242
38995709955620,535cyclictest0-21swapper/1023:05:242
38995759955432,521cyclictest0-21swapper/1121:26:253
38995659954624,521cyclictest0-21swapper/920:23:2515
3899570995265,519cyclictest0-21swapper/1023:46:242
38995759952534,490cyclictest0-21swapper/1100:13:243
3899570995160,515cyclictest0-21swapper/1023:38:242
389955999515514,1cyclictest4009214-21kworker/7:2+i915-unordered21:33:2513
389956599508508,0cyclictest0-21swapper/919:30:2515
38995399950615,490cyclictest0-21swapper/221:53:258
3899575995031,498cyclictest0-21swapper/1121:06:253
38995889949318,0cyclictest0-21swapper/1420:54:256
38995709948914,59cyclictest0-21swapper/1000:02:202
389955999489486,1cyclictest0-21swapper/720:54:2513
38995889948630,454cyclictest0-21swapper/1423:38:246
389959399485484,1cyclictest0-21swapper/1521:44:257
3899588994856,0cyclictest0-21swapper/1422:35:256
3899575994809,59cyclictest0-21swapper/1121:08:253
389957099477475,2cyclictest4049409-21kworker/10:2+i915-unordered22:35:252
38995469947122,28cyclictest0-21swapper/420:32:0810
38995469947120,30cyclictest0-21swapper/422:06:4710
38995659946924,29cyclictest4120678-21ntp_states23:37:4615
38995399946718,30cyclictest0-21swapper/222:47:458
38995469946619,29cyclictest0-21swapper/422:48:4710
38995439946313,30cyclictest0-21swapper/322:15:099
38995439946313,29cyclictest0-21swapper/300:25:489
389954699460459,1cyclictest1818-21snmpd19:37:5910
38995709945920,29cyclictest0-21swapper/1023:26:242
3899588994580,457cyclictest0-21swapper/1421:53:256
389953999458457,1cyclictest4114470-21kworker/2:1+i915-unordered23:38:248
38995889945710,30cyclictest0-21swapper/1422:19:476
3899570994565,450cyclictest0-21swapper/1020:34:252
3899588994535,30cyclictest0-21swapper/1421:22:086
3899575994526,443cyclictest4084452-21ntpq22:52:463
3899570994526,28cyclictest0-21swapper/1022:59:082
3899570994526,28cyclictest0-21swapper/1022:59:082
389954399451449,2cyclictest3801901-21kworker/3:2+i915-unordered21:13:259
3899575994497,30cyclictest0-21swapper/1120:52:203
389953699448446,1cyclictest4065243-21kworker/1:0+i915-unordered22:31:251
3899570994472,29cyclictest0-21swapper/1023:32:462
389955599446445,1cyclictest69750irq/159-i91523:38:2412
38995369944525,419cyclictest0-21swapper/121:04:101
38995369944524,420cyclictest0-21swapper/123:47:461
38995369944524,420cyclictest0-21swapper/123:04:461
38995369944524,420cyclictest0-21swapper/123:04:461
38995369944524,420cyclictest0-21swapper/119:51:471
389959399444441,1cyclictest3984863-21kworker/15:2+i915-unordered20:54:257
389955599444443,1cyclictest69750irq/159-i91519:18:2512
3899546994440,443cyclictest0-21swapper/422:21:2510
389953999444442,2cyclictest3928504-21kworker/2:0+pm20:28:368
38995369944423,420cyclictest0-21swapper/122:34:481
38995369944423,420cyclictest0-21swapper/100:24:471
38995369944422,421cyclictest0-21swapper/119:43:471
38995369944421,422cyclictest0-21swapper/120:44:461
389959399443440,2cyclictest0-21swapper/1521:33:257
389956299443441,2cyclictest1818-21snmpd00:17:5714
38995439944322,420cyclictest0-21swapper/321:38:469
38995369944322,420cyclictest0-21swapper/121:26:101
38995369944321,421cyclictest0-21swapper/122:51:451
389953299443442,1cyclictest0-21swapper/000:17:570
389956599442442,0cyclictest0-21swapper/923:12:0715
389955199442442,0cyclictest0-21swapper/521:56:2511
38995439944225,416cyclictest0-21swapper/300:05:249
38995439944220,419cyclictest0-21swapper/319:46:469
38995399944225,416cyclictest4040335-21ps21:57:468
38995369944223,418cyclictest0-21swapper/121:38:101
38995369944221,420cyclictest0-21swapper/120:22:091
38995369944221,420cyclictest0-21swapper/120:22:091
38995369944221,420cyclictest0-21swapper/119:28:471
389957599441438,2cyclictest3920558-21kworker/11:0+i915-unordered19:50:253
38995759944122,418cyclictest0-21swapper/1123:12:473
389957099441441,0cyclictest0-21swapper/1023:12:072
38995369944120,420cyclictest0-21swapper/122:38:471
38995369944120,420cyclictest0-21swapper/122:20:091
389956599440437,3cyclictest3976768-21kworker/u64:7+events_unbound21:14:2515
38995519944020,419cyclictest0-21swapper/521:28:1111
389954399440439,1cyclictest3873562-21kworker/3:5+i915-unordered21:26:259
38995369944021,419cyclictest0-21swapper/120:08:091
38995369944020,419cyclictest0-21swapper/121:51:101
38995369944018,421cyclictest0-21swapper/121:37:101
38995849943919,419cyclictest0-21swapper/1323:25:085
38995759943923,415cyclictest0-21swapper/1120:33:253
38995709943921,417cyclictest0-21swapper/1020:14:102
38995709943921,417cyclictest0-21swapper/1020:14:102
38995439943923,416cyclictest0-21swapper/322:24:249
389953999439438,1cyclictest4109554-21kworker/2:0+i915-unordered23:46:248
38995369943918,420cyclictest0-21swapper/121:20:471
38995369943916,422cyclictest0-21swapper/119:41:471
389958899438437,1cyclictest3908631-21kworker/14:2+i915-unordered19:18:256
38995599943815,422cyclictest0-21swapper/720:50:4613
38995519943817,420cyclictest0-21swapper/500:29:4611
389953999438437,1cyclictest4085591-21kworker/2:1+i915-unordered23:05:248
389953999438437,1cyclictest4085591-21kworker/2:1+i915-unordered23:05:248
38995369943817,420cyclictest0-21swapper/122:53:471
38995519943718,418cyclictest0-21swapper/523:15:1011
38995519943717,419cyclictest0-21swapper/519:24:4611
38995519943717,419cyclictest0-21swapper/500:33:4711
38995519943716,420cyclictest0-21swapper/520:57:0711
38995519943716,420cyclictest0-21swapper/500:10:0911
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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