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2026-05-15 - 03:56
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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 Fri May 15, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
383217699518517,1cyclictest3970267-21kworker/2:2+i915-unordered22:01:138
383217199492490,2cyclictest3954143-21kworker/1:1+i915-unordered21:52:131
383220199490489,1cyclictest4074870-21kworker/9:1+i915-unordered00:12:1315
38321909949039,27cyclictest0-21swapper/621:59:1312
383217199490489,1cyclictest3836121-21kworker/1:0+i915-unordered19:57:131
383217199489488,1cyclictest3954143-21kworker/1:1+i915-unordered21:46:131
383221899486485,1cyclictest0-21swapper/1219:34:134
383222299485454,31cyclictest0-21swapper/1319:22:135
383217699484484,0cyclictest3741796-21kworker/2:3+i915-unordered20:19:138
383217199481480,1cyclictest3865051-21kworker/1:1+i915-unordered19:47:131
38321769947827,59cyclictest43-21ksoftirqd/220:04:138
38321809947724,59cyclictest0-21swapper/320:09:139
38321909947222,58cyclictest0-21swapper/620:03:5812
3832171994714,466cyclictest34-21ksoftirqd/121:35:131
38322229947020,58cyclictest0-21swapper/1319:54:135
38321959946721,58cyclictest0-21swapper/722:42:1313
3832171994659,455cyclictest0-21swapper/119:34:131
383222299462462,0cyclictest0-21swapper/1321:35:135
38321719946221,440cyclictest0-21swapper/119:22:131
3832224994588,58cyclictest0-21swapper/1420:44:136
3832224994588,58cyclictest0-21swapper/1420:44:136
38321879945528,28cyclictest0-21swapper/522:10:3711
383219599449448,1cyclictest0-21swapper/723:07:1313
38322229944624,30cyclictest0-21swapper/1323:30:135
38322229944624,30cyclictest0-21swapper/1323:30:135
38321809944622,30cyclictest0-21swapper/322:46:139
38321719944320,30cyclictest34-21ksoftirqd/122:59:131
38321809944219,30cyclictest52-21ksoftirqd/319:11:139
3832171994420,438cyclictest0-21swapper/120:51:131
3832171994420,438cyclictest0-21swapper/120:51:131
383219999441438,3cyclictest1818-21snmpd22:29:1114
38321999944120,30cyclictest0-21swapper/820:44:5614
38321999944120,30cyclictest0-21swapper/820:44:5614
38321719944116,29cyclictest0-21swapper/121:56:131
383221399440439,1cyclictest0-21swapper/1121:32:133
38321999944021,29cyclictest0-21swapper/819:51:5514
38321999944020,29cyclictest0-21swapper/821:47:5614
38321999944019,420cyclictest0-21swapper/821:20:5614
38321769944014,425cyclictest43-21ksoftirqd/220:32:138
38322229943918,29cyclictest0-21swapper/1323:06:135
38321999943919,29cyclictest0-21swapper/821:49:5514
38321909943910,30cyclictest0-21swapper/619:56:5512
38321809943912,30cyclictest0-21swapper/321:48:099
38321909943812,30cyclictest0-21swapper/623:49:3512
38321909943810,30cyclictest0-21swapper/621:44:5612
38321909943712,30cyclictest0-21swapper/619:43:3612
38321769943714,29cyclictest43-21ksoftirqd/223:17:138
38321959943622,414cyclictest0-21swapper/720:47:1313
38321959943622,414cyclictest0-21swapper/720:47:1313
383219099436435,1cyclictest3990309-21kworker/6:0+i915-unordered22:34:1312
38321769943643,392cyclictest0-21swapper/221:05:138
38321719943515,28cyclictest0-21swapper/120:01:131
38322229943416,417cyclictest0-21swapper/1319:52:135
383220199434433,1cyclictest69750irq/159-i91519:47:1315
383217199433432,1cyclictest3954143-21kworker/1:1+i915-unordered22:00:131
38322229943110,29cyclictest0-21swapper/1319:41:135
3832195994317,30cyclictest0-21swapper/722:13:0913
38321769943112,418cyclictest0-21swapper/220:13:358
383216899431429,1cyclictest0-21swapper/020:13:250
383222299430430,0cyclictest4030614-21kworker/13:2+i915-unordered00:07:135
3832187994291,29cyclictest0-21swapper/519:15:3411
383219099428428,0cyclictest0-21swapper/623:30:1312
383219099428428,0cyclictest0-21swapper/623:30:1312
3832187994281,30cyclictest0-21swapper/522:28:3511
3832180994286,418cyclictest3868200-21tr19:48:359
3832187994271,30cyclictest0-21swapper/500:11:3511
3832187994270,29cyclictest0-21swapper/523:57:5811
3832180994270,426cyclictest0-21swapper/300:29:369
38321879942626,397cyclictest0-21swapper/500:37:3611
3832187994260,30cyclictest0-21swapper/500:05:3611
3832187994253,29cyclictest0-21swapper/521:02:5811
38321879942526,398cyclictest0-21swapper/520:32:3611
383217699425422,2cyclictest3953868-21kworker/u64:2+events_unbound22:17:138
38321879942425,397cyclictest0-21swapper/500:15:3611
3832195994235,417cyclictest0-21swapper/723:49:1313
38321879942324,397cyclictest0-21swapper/500:29:3611
38321879942324,396cyclictest0-21swapper/522:55:3411
38321809942326,396cyclictest0-21swapper/322:32:349
383217199423418,4cyclictest3897444-21kworker/1:1+events20:30:351
383222999422421,1cyclictest26550irq/134-xhci_hcd20:21:567
38321879942223,398cyclictest0-21swapper/522:19:3611
38321879942223,397cyclictest0-21swapper/523:00:5511
38321879942223,397cyclictest0-21swapper/520:56:3611
38321879942223,397cyclictest0-21swapper/520:56:3611
38321879942223,396cyclictest0-21swapper/500:22:3611
38321879942220,400cyclictest0-21swapper/523:16:5711
38321809942226,395cyclictest0-21swapper/300:18:369
3832195994213,30cyclictest0-21swapper/722:18:0913
38321879942125,394cyclictest0-21swapper/519:53:5711
38321879942121,397cyclictest0-21swapper/521:43:5711
38321719942126,394cyclictest0-21swapper/123:13:341
38321719942125,395cyclictest0-21swapper/120:58:351
38321719942125,395cyclictest0-21swapper/100:33:341
383222499420419,1cyclictest69750irq/159-i91523:07:136
38322229942026,394cyclictest0-21swapper/1323:42:135
38322229942026,394cyclictest0-21swapper/1323:42:135
3832199994200,25cyclictest0-21swapper/822:34:5714
383219099420419,1cyclictest0-21swapper/600:12:1312
38321879942023,396cyclictest0-21swapper/519:18:5511
38321879942022,396cyclictest0-21swapper/519:08:5711
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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