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2026-04-03 - 13:31
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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 Apr 03, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
385695999529527,2cyclictest3984305-21kworker/9:1+i915-unordered21:48:3015
385693599521519,1cyclictest3949933-21kworker/2:2+i915-unordered21:11:308
385693599521519,1cyclictest3949933-21kworker/2:2+i915-unordered21:11:308
38569879952036,483cyclictest0-21swapper/1500:37:307
3856935995194,514cyclictest0-21swapper/223:21:308
3856987995089,498cyclictest0-21swapper/1521:50:307
385695499475474,0cyclictest4123118-21kworker/7:1+i915-unordered00:37:3013
385695499463461,2cyclictest3982502-21kworker/7:1+i915-unordered21:50:3013
385693799460459,1cyclictest69750irq/159-i91519:36:309
385698399458455,0cyclictest0-21swapper/1423:53:306
385693799457456,1cyclictest69750irq/159-i91519:41:309
385694999451449,2cyclictest4099002-21kworker/6:2+i915-unordered00:10:3012
38569839944925,30cyclictest0-21swapper/1419:14:146
38569839944925,29cyclictest0-21swapper/1421:54:136
38569839944924,29cyclictest0-21swapper/1400:36:526
385693799449448,1cyclictest69750irq/159-i91523:02:309
385693799449448,1cyclictest69750irq/159-i91521:11:309
385693799449448,1cyclictest69750irq/159-i91521:11:309
38569379944723,30cyclictest0-21swapper/300:05:309
38569379944622,30cyclictest52-21ksoftirqd/323:18:309
38569599944524,30cyclictest106-21ksoftirqd/921:27:3015
38569309944316,29cyclictest0-21swapper/123:05:301
38569879944221,420cyclictest0-21swapper/1522:52:167
38569359944218,30cyclictest0-21swapper/219:41:308
38569879944019,420cyclictest0-21swapper/1521:45:527
38569599944016,30cyclictest0-21swapper/923:08:3015
385693799438438,0cyclictest69750irq/159-i91523:06:309
38569379943822,415cyclictest0-21swapper/321:50:149
38569729943713,423cyclictest0-21swapper/1100:27:303
3856972994370,14cyclictest0-21swapper/1123:37:303
38569599943713,30cyclictest0-21swapper/919:26:3015
385692699437434,2cyclictest4059144-21kworker/0:1+events00:07:520
38569779943510,30cyclictest0-21swapper/1222:30:514
385697299435433,2cyclictest0-21swapper/1120:35:303
385695499435433,1cyclictest3893826-21kworker/7:1+i915-unordered19:56:3013
38569549943511,28cyclictest0-21swapper/700:09:2513
3856935994356,30cyclictest0-21swapper/221:54:528
3856977994348,29cyclictest0-21swapper/1220:52:164
38569359943414,30cyclictest43-21ksoftirqd/219:53:308
3856977994337,30cyclictest0-21swapper/1221:41:154
385696599433432,1cyclictest0-21swapper/1020:35:302
3856983994320,431cyclictest0-21swapper/1423:37:306
385697299431430,1cyclictest0-21swapper/1123:53:303
3856937994313,30cyclictest0-21swapper/320:44:539
3856977994304,29cyclictest0-21swapper/1220:26:144
385696599430428,2cyclictest1818-21snmpd20:06:232
385693799430429,1cyclictest69750irq/159-i91520:52:309
3856977994292,30cyclictest0-21swapper/1222:36:524
385694999428397,31cyclictest0-21swapper/620:52:3012
385694199428425,3cyclictest1818-21snmpd21:21:0510
3856977994270,30cyclictest0-21swapper/1223:22:524
3856977994270,30cyclictest0-21swapper/1223:03:534
3856957994270,425cyclictest0-21swapper/820:06:2314
3856977994261,29cyclictest0-21swapper/1222:05:144
3856977994260,30cyclictest0-21swapper/1223:38:524
3856954994260,29cyclictest0-21swapper/723:59:2513
3856954994260,29cyclictest0-21swapper/723:59:2513
3856935994268,416cyclictest0-21swapper/222:25:148
3856935994267,418cyclictest0-21swapper/223:35:518
3856977994241,29cyclictest0-21swapper/1220:45:304
3856977994240,29cyclictest0-21swapper/1200:33:134
38569379942423,397cyclictest0-21swapper/320:04:519
38569879942325,397cyclictest0-21swapper/1522:06:517
38569879942324,398cyclictest0-21swapper/1523:09:157
3856977994230,29cyclictest0-21swapper/1200:15:534
3856959994231,30cyclictest106-21ksoftirqd/921:21:3015
3856959994230,30cyclictest0-21swapper/921:31:3015
38569879942223,399cyclictest0-21swapper/1521:08:527
38569879942223,399cyclictest0-21swapper/1521:08:527
38569879942223,398cyclictest0-21swapper/1523:30:147
385695799422422,0cyclictest0-21swapper/800:07:5214
385692699422419,2cyclictest3984975-21kworker/0:0+events23:19:520
38569879942124,396cyclictest0-21swapper/1521:26:527
38569879942122,398cyclictest0-21swapper/1523:01:527
38569879942121,399cyclictest0-21swapper/1522:21:537
38569879942120,400cyclictest0-21swapper/1521:20:527
38569879942120,400cyclictest0-21swapper/1519:40:527
385696599421419,1cyclictest3877602-21kworker/10:2+i915-unordered19:41:302
385695999421420,0cyclictest3956828-21kworker/9:0+i915-unordered21:35:3015
38569879942023,397cyclictest0-21swapper/1520:06:517
38569879942023,396cyclictest0-21swapper/1521:40:147
38569879942023,396cyclictest0-21swapper/1519:23:147
38569879942022,397cyclictest0-21swapper/1522:16:527
38569879942022,397cyclictest0-21swapper/1520:20:527
38569879942021,398cyclictest0-21swapper/1519:47:537
38569879942020,399cyclictest0-21swapper/1522:31:517
38569879942020,399cyclictest0-21swapper/1520:30:527
385695999420417,2cyclictest3998462-21kworker/9:2+events22:05:5315
38569359942023,396cyclictest0-21swapper/219:59:528
38569359942022,397cyclictest0-21swapper/200:19:528
38569879941921,397cyclictest0-21swapper/1522:37:517
38569879941920,398cyclictest0-21swapper/1500:02:527
38569879941920,398cyclictest0-21swapper/1500:02:527
385696599419417,2cyclictest0-21swapper/1019:36:302
38569879941823,394cyclictest0-21swapper/1522:27:517
38569879941820,397cyclictest0-21swapper/1522:43:537
38569879941820,397cyclictest0-21swapper/1521:30:537
38569879941819,398cyclictest0-21swapper/1522:02:517
38569879941819,398cyclictest0-21swapper/1521:58:537
38569879941819,398cyclictest0-21swapper/1521:18:517
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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