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2026-07-18 - 01:54
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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 rack0slot5.osadl.org (updated Sat Jul 18, 2026 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28817409951915,504cyclictest0-21swapper/119:55:131
288176299518517,1cyclictest3075418-21kworker/7:1+i915-unordered23:07:1313
288178599510508,2cyclictest3131596-21kworker/12:1+i915-unordered00:15:134
2881752995072,505cyclictest0-21swapper/423:22:1310
28817529950421,29cyclictest61-21ksoftirqd/419:38:1310
28817489950012,487cyclictest0-21swapper/323:10:139
28817529949910,27cyclictest0-21swapper/422:22:1310
288177099493493,0cyclictest3143790-21kworker/9:1+i915-unordered00:32:1315
288176299489458,31cyclictest0-21swapper/719:47:1313
2881779994823,59cyclictest0-21swapper/1121:46:083
288177099482482,0cyclictest2989700-21kworker/9:2+i915-unordered21:22:1315
288178599478478,0cyclictest3079419-21kworker/12:1+i915-unordered23:22:134
28817489947625,59cyclictest0-21swapper/323:17:139
288178599473472,1cyclictest69750irq/159-i91521:39:134
28817489947252,414cyclictest2913606-21ntpq19:41:349
28817489946824,30cyclictest0-21swapper/300:27:139
28817929946720,29cyclictest0-21swapper/1423:59:366
28817929946720,29cyclictest0-21swapper/1420:20:556
28817929946718,29cyclictest0-21swapper/1421:30:576
2881762994670,466cyclictest0-21swapper/722:44:1313
28817929946418,28cyclictest0-21swapper/1420:39:346
28817439946416,29cyclictest0-21swapper/219:26:358
28817439946416,29cyclictest0-21swapper/219:26:358
28817959946113,30cyclictest0-21swapper/1522:32:367
2881752994610,3cyclictest0-21swapper/423:51:2310
28817859946016,30cyclictest0-21swapper/1223:13:134
288174899460459,1cyclictest0-21swapper/323:24:139
28817439946012,29cyclictest0-21swapper/200:26:358
28817439945912,29cyclictest0-21swapper/222:58:138
2881792994579,30cyclictest0-21swapper/1400:29:356
28817929945710,30cyclictest0-21swapper/1423:48:586
288177399457454,3cyclictest2998975-21kworker/10:1+i915-unordered21:39:132
28817529945722,429cyclictest2910566-21kworker/4:2+i915-unordered19:45:1310
28817959945611,28cyclictest0-21swapper/1522:13:137
2881743994567,29cyclictest0-21swapper/220:03:578
288177399455453,2cyclictest0-21swapper/1023:59:482
2881748994557,30cyclictest0-21swapper/321:56:359
2881743994557,29cyclictest0-21swapper/221:27:578
2881735994559,30cyclictest0-21swapper/021:53:130
288175999453423,30cyclictest0-21swapper/621:23:1312
2881743994537,30cyclictest0-21swapper/221:36:348
2881743994501,30cyclictest0-21swapper/223:11:358
2881743994480,30cyclictest0-21swapper/223:37:598
2881743994480,30cyclictest0-21swapper/200:05:598
288177999446442,3cyclictest1818-21snmpd21:24:253
28817439944619,29cyclictest0-21swapper/219:06:378
28817929944517,31cyclictest0-21swapper/1422:35:356
288179099445444,1cyclictest3131704-21kworker/13:1+i915-unordered00:17:135
288176299445443,1cyclictest3063507-21kworker/7:2+pm23:29:4713
28817959944423,420cyclictest0-21swapper/1523:57:357
28817929944419,29cyclictest0-21swapper/1421:00:556
28817929944418,30cyclictest0-21swapper/1423:06:576
28817959944323,419cyclictest0-21swapper/1521:37:587
28817959944321,421cyclictest0-21swapper/1522:08:347
28817959944321,421cyclictest0-21swapper/1522:08:347
28817929944319,29cyclictest0-21swapper/1421:04:356
28817929944318,28cyclictest0-21swapper/1423:33:346
2881752994430,29cyclictest0-21swapper/400:23:1310
28817409944324,418cyclictest0-21swapper/100:14:351
28817409944323,419cyclictest0-21swapper/100:28:551
28817409944323,418cyclictest0-21swapper/121:33:361
28817409944322,420cyclictest0-21swapper/121:29:361
28817409944321,421cyclictest0-21swapper/120:05:361
288173599443440,2cyclictest2971120-21kworker/0:1+events21:56:570
28817959944222,419cyclictest0-21swapper/1521:53:587
28817929944215,30cyclictest0-21swapper/1423:26:356
28817409944222,419cyclictest0-21swapper/121:18:341
28817959944122,418cyclictest0-21swapper/1520:32:367
288179099441441,0cyclictest0-21swapper/1300:32:135
288175599441440,1cyclictest69750irq/159-i91500:17:1311
28817489944122,416cyclictest0-21swapper/320:48:559
28817409944120,420cyclictest0-21swapper/122:21:561
288179099440438,1cyclictest3118355-21kworker/13:2+i915-unordered00:13:135
288178599440439,1cyclictest69750irq/159-i91519:47:134
28817929943920,417cyclictest0-21swapper/1422:06:356
28817929943920,417cyclictest0-21swapper/1422:06:356
288178599439437,1cyclictest2963076-21kworker/12:0+i915-unordered21:09:134
28817629943919,28cyclictest0-21swapper/720:17:1313
28817409943923,415cyclictest0-21swapper/120:46:091
28817959943817,419cyclictest0-21swapper/1522:57:567
28817959943816,421cyclictest0-21swapper/1520:47:567
28817929943818,417cyclictest0-21swapper/1423:52:566
28817929943817,418cyclictest0-21swapper/1420:35:366
28817799943818,418cyclictest0-21swapper/1100:12:363
288173599438435,2cyclictest3082176-21kworker/0:2+events00:20:570
28817959943716,419cyclictest0-21swapper/1520:42:567
28817929943717,417cyclictest0-21swapper/1421:07:366
28817859943718,418cyclictest0-21swapper/1220:21:354
288175599437437,0cyclictest69750irq/159-i91500:32:1311
288175299437432,4cyclictest1818-21snmpd23:04:2510
28817529943716,418cyclictest0-21swapper/421:06:3410
28817439943712,29cyclictest0-21swapper/220:24:568
28817409943717,417cyclictest0-21swapper/123:36:581
28817409943715,421cyclictest0-21swapper/121:59:341
28817359943723,413cyclictest0-21swapper/000:07:550
288178599436434,1cyclictest69750irq/159-i91519:55:134
28817679943617,418cyclictest0-21swapper/800:14:5714
28817629943621,414cyclictest0-21swapper/700:35:1313
28817359943621,415cyclictest0-21swapper/022:01:560
28817359943621,415cyclictest0-21swapper/022:01:560
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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