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2026-09-19 - 08:41
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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 Sep 19, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
40776339954012,526cyclictest0-21swapper/919:16:1415
40776149953110,520cyclictest0-21swapper/421:40:1410
407761499523493,30cyclictest0-21swapper/420:26:1410
407762599521520,1cyclictest0-21swapper/722:16:1413
40776339951718,498cyclictest0-21swapper/922:10:1415
407763399516514,1cyclictest89647-21kworker/9:1+i915-unordered23:37:1315
40776339950918,490cyclictest0-21swapper/922:36:1415
407761899508506,2cyclictest4126397-21kworker/5:2+i915-unordered20:18:1411
407764799505503,2cyclictest4193614-21kworker/12:1+i915-unordered21:40:144
407761899505504,1cyclictest4170813-21kworker/5:1+i915-unordered21:05:1411
40776339950340,462cyclictest106-21ksoftirqd/923:30:1315
40776539950134,467cyclictest0-21swapper/1422:56:146
40776519949819,58cyclictest0-21swapper/1322:23:585
407764799497496,1cyclictest4138509-21kworker/12:0+i915-unordered20:26:144
407763899492490,2cyclictest61564-21kworker/10:1+i915-unordered22:47:142
40776519949012,59cyclictest0-21swapper/1322:14:555
407765899488487,1cyclictest29384-21kworker/15:1+i915-unordered22:16:147
407761899487485,1cyclictest4166668-21kworker/5:2+i915-unordered20:57:1411
407761899476474,2cyclictest4130538-21kworker/5:0+i915-unordered20:13:1411
40776069947525,30cyclictest0-21swapper/223:03:588
407761899472470,2cyclictest0-21swapper/520:26:1411
40776539947022,30cyclictest0-21swapper/1400:20:136
40776539947022,30cyclictest0-21swapper/1400:20:136
40776339946921,29cyclictest0-21swapper/919:57:5615
407765399468467,1cyclictest0-21swapper/1400:26:136
407765399468467,1cyclictest0-21swapper/1400:26:136
40776339946820,30cyclictest0-21swapper/921:23:3515
40776339946820,29cyclictest0-21swapper/920:49:0015
40776519946720,29cyclictest0-21swapper/1322:06:375
40776539946416,28cyclictest0-21swapper/1420:05:356
40776069946419,30cyclictest0-21swapper/220:41:358
40776479946221,29cyclictest0-21swapper/1223:11:134
40776069946213,29cyclictest0-21swapper/219:56:368
40776539946115,29cyclictest0-21swapper/1422:43:596
40776539946015,30cyclictest0-21swapper/1420:27:366
40776109946022,28cyclictest0-21swapper/321:17:149
40775999946011,30cyclictest0-21swapper/023:29:370
4077651994599,29cyclictest0-21swapper/1321:03:365
40776109945817,29cyclictest0-21swapper/320:48:149
407764299457456,1cyclictest69750irq/159-i91521:40:143
40776479945322,29cyclictest0-21swapper/1200:30:134
407761099453452,1cyclictest0-21swapper/321:38:149
407761099453452,1cyclictest0-21swapper/321:38:149
407760699453425,1cyclictest1818-21snmpd22:41:108
407763899452452,0cyclictest0-21swapper/1023:30:132
407764299451451,0cyclictest69750irq/159-i91522:36:143
4077606994517,30cyclictest0-21swapper/223:31:368
4077653994505,29cyclictest0-21swapper/1420:33:586
407764299450449,1cyclictest69750irq/159-i91522:47:143
407763899450447,2cyclictest4185748-21kworker/u64:6+events_unbound23:03:352
4077606994493,29cyclictest0-21swapper/223:56:008
40776259944726,420cyclictest0-21swapper/723:43:3613
4077618994471,28cyclictest0-21swapper/521:39:5811
407761499447447,0cyclictest0-21swapper/420:44:4910
40775999944726,420cyclictest0-21swapper/022:15:560
40776339944627,418cyclictest0-21swapper/922:45:3415
40776189944626,419cyclictest0-21swapper/521:22:5611
40776189944625,420cyclictest0-21swapper/520:05:5711
4077606994460,29cyclictest0-21swapper/200:08:578
40775999944623,422cyclictest0-21swapper/020:40:350
40775999944623,422cyclictest0-21swapper/019:18:560
40776589944525,419cyclictest0-21swapper/1521:11:577
40776539944525,419cyclictest0-21swapper/1419:53:356
40776189944525,419cyclictest0-21swapper/520:00:3411
40776069944522,421cyclictest0-21swapper/223:34:588
40776189944425,418cyclictest0-21swapper/500:11:5611
40775999944423,420cyclictest0-21swapper/020:13:590
40776589944322,420cyclictest0-21swapper/1519:43:377
407761899443439,3cyclictest4081231-21kworker/u64:5+events_unbound20:45:1411
40776069944323,420cyclictest0-21swapper/223:06:008
40776069944322,419cyclictest0-21swapper/220:56:568
40776539944223,418cyclictest0-21swapper/1423:28:586
4077618994422,439cyclictest0-21swapper/519:16:1411
40776069944221,419cyclictest0-21swapper/219:30:358
40776069944221,418cyclictest0-21swapper/221:14:558
40776069944220,421cyclictest0-21swapper/221:23:568
40775999944220,421cyclictest0-21swapper/021:01:590
4077599994420,30cyclictest0-21swapper/019:47:140
40776589944122,418cyclictest0-21swapper/1521:18:367
40776589944121,419cyclictest0-21swapper/1523:47:347
40776589944121,419cyclictest0-21swapper/1519:45:357
40776539944121,419cyclictest0-21swapper/1421:49:596
40776539944121,417cyclictest0-21swapper/1419:38:376
4077633994410,29cyclictest0-21swapper/900:27:3515
4077633994410,29cyclictest0-21swapper/900:27:3515
407761899441440,1cyclictest0-21swapper/519:39:5611
40776069944121,419cyclictest0-21swapper/219:36:598
40776069944120,418cyclictest0-21swapper/220:10:598
40775999944122,417cyclictest0-21swapper/021:16:580
40776539944021,418cyclictest0-21swapper/1422:52:586
40776539944021,418cyclictest0-21swapper/1400:01:556
40776539944018,421cyclictest0-21swapper/1400:18:376
40776539944018,421cyclictest0-21swapper/1400:18:376
40776069944019,419cyclictest0-21swapper/220:45:368
407760499440438,1cyclictest21367-21kworker/1:1+events22:10:351
407765199439439,0cyclictest69750irq/159-i91520:08:145
40776069943919,418cyclictest0-21swapper/221:07:588
40776069943918,419cyclictest0-21swapper/220:37:348
40776069943917,419cyclictest0-21swapper/219:49:598
40776069943912,30cyclictest0-21swapper/200:00:598
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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