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2026-04-13 - 05:24
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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 Mon Apr 13, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4509479955338,514cyclictest0-21swapper/1019:17:122
450932995280,29cyclictest0-21swapper/623:15:1212
450942995210,520cyclictest0-21swapper/922:38:1215
45091399494492,2cyclictest612776-21kworker/1:2+i915-unordered22:38:121
45091899482480,2cyclictest198140-21kworker/2:5+i915-unordered19:17:128
4509549946915,59cyclictest0-21swapper/1122:30:543
4509189946925,30cyclictest0-21swapper/221:53:128
4509249946419,29cyclictest0-21swapper/423:07:3410
45095799456455,1cyclictest69750irq/159-i91522:38:124
45093799456455,1cyclictest494879-21kworker/7:4+i915-unordered23:45:1213
4509249945628,30cyclictest0-21swapper/422:20:5410
4509549945514,58cyclictest0-21swapper/1119:44:083
4509329945525,29cyclictest0-21swapper/620:09:3312
4509249945426,30cyclictest0-21swapper/419:31:5710
4509249945328,29cyclictest0-21swapper/419:56:5810
45092499450449,1cyclictest0-21swapper/422:38:1210
4509549944919,30cyclictest0-21swapper/1120:58:343
4509709944625,420cyclictest0-21swapper/1519:39:347
4509549944619,29cyclictest0-21swapper/1122:55:353
4509549944421,30cyclictest0-21swapper/1121:18:573
4509549944417,30cyclictest0-21swapper/1120:29:563
4509379944422,29cyclictest0-21swapper/721:25:1213
4509549944216,30cyclictest0-21swapper/1123:22:563
45094799442442,0cyclictest0-21swapper/1019:52:342
4509249944217,29cyclictest0-21swapper/419:24:3410
4509579944120,30cyclictest0-21swapper/1222:52:124
4509549944115,29cyclictest0-21swapper/1119:47:583
4509139944121,30cyclictest0-21swapper/119:37:121
450962994400,439cyclictest0-21swapper/1321:48:085
45094299440440,0cyclictest0-21swapper/921:03:1215
4509379944018,28cyclictest0-21swapper/723:11:1213
4509289944021,418cyclictest0-21swapper/521:59:3311
4509329943918,30cyclictest0-21swapper/620:49:0712
4509579943843,394cyclictest0-21swapper/1223:56:124
4509579943843,394cyclictest0-21swapper/1223:56:124
4509329943812,30cyclictest0-21swapper/600:28:3312
4509139943816,28cyclictest0-21swapper/120:07:121
45095799437437,0cyclictest69750irq/159-i91521:21:124
4509329943712,29cyclictest0-21swapper/621:17:3312
450932994359,29cyclictest0-21swapper/620:20:3512
4509289943515,419cyclictest0-21swapper/523:26:3311
4509329943410,29cyclictest0-21swapper/623:12:3512
4509329943410,28cyclictest0-21swapper/620:35:5712
45092499434432,1cyclictest681040-21kworker/4:0+i915-unordered00:01:1210
45092499434432,1cyclictest681040-21kworker/4:0+i915-unordered00:01:1210
4509329943316,415cyclictest0-21swapper/600:30:3512
4509379943218,413cyclictest0-21swapper/723:18:1213
4509379943210,29cyclictest0-21swapper/723:05:1213
4509289943213,419cyclictest0-21swapper/522:05:5611
450924994326,30cyclictest0-21swapper/421:49:3410
450957994318,29cyclictest0-21swapper/1223:40:124
450924994305,29cyclictest0-21swapper/419:50:3410
450924994302,30cyclictest0-21swapper/422:53:5710
4509189943011,418cyclictest0-21swapper/219:51:128
450947994299,418cyclictest0-21swapper/1020:49:352
450924994290,30cyclictest0-21swapper/400:07:5410
450924994290,30cyclictest0-21swapper/400:07:5410
450970994287,420cyclictest0-21swapper/1522:49:347
45096599428427,1cyclictest640932-21kworker/14:0+i915-unordered23:15:126
450937994280,30cyclictest0-21swapper/722:24:0813
450932994284,29cyclictest0-21swapper/620:27:5612
450924994280,30cyclictest0-21swapper/421:37:5510
45097099427419,5cyclictest463658-21kworker/u64:7+events_unbound19:26:337
45096599427426,1cyclictest556415-21kworker/14:1+i915-unordered21:21:126
45095799426426,0cyclictest69750irq/159-i91521:43:124
450928994260,0cyclictest0-21swapper/519:30:3511
4509189942610,29cyclictest0-21swapper/222:30:128
45093799425425,0cyclictest0-21swapper/722:56:1213
45093299425424,1cyclictest0-21swapper/621:21:1212
450924994252,30cyclictest0-21swapper/423:25:5610
450970994247,416cyclictest0-21swapper/1500:11:337
45095799424423,1cyclictest69750irq/159-i91522:56:124
450970994236,416cyclictest0-21swapper/1523:55:347
450970994236,416cyclictest0-21swapper/1523:55:347
450970994235,417cyclictest0-21swapper/1522:16:337
45094799423420,2cyclictest409028-21kworker/u64:6+events_unbound19:27:352
4509289942325,397cyclictest0-21swapper/520:59:3511
45096299422418,4cyclictest1818-21snmpd23:01:465
45095799422422,0cyclictest0-21swapper/1223:48:124
4509429942226,395cyclictest0-21swapper/920:52:1215
450937994226,28cyclictest0-21swapper/723:28:1213
450918994220,29cyclictest0-21swapper/220:57:128
4509709942123,397cyclictest656045-21ntpq23:19:337
4509709942021,398cyclictest0-21swapper/1522:29:357
45095799420420,0cyclictest69750irq/159-i91523:51:124
45095799420419,1cyclictest69750irq/159-i91519:40:124
4509379941925,393cyclictest0-21swapper/722:51:1213
4509289941921,397cyclictest0-21swapper/523:42:5411
4509289941921,397cyclictest0-21swapper/521:09:3511
4509289941921,397cyclictest0-21swapper/521:09:3511
4509289941919,399cyclictest0-21swapper/520:44:3511
4509709941820,397cyclictest0-21swapper/1521:13:557
4509709941820,397cyclictest0-21swapper/1521:13:557
45092899418415,3cyclictest1818-21snmpd21:48:0811
4509709941719,396cyclictest0-21swapper/1519:58:127
45095799417416,1cyclictest69750irq/159-i91523:25:124
4509479941719,397cyclictest0-21swapper/1020:29:342
4509479941719,397cyclictest0-21swapper/1000:19:332
4509429941721,395cyclictest0-21swapper/919:12:1215
450924994179,407cyclictest659040-21kworker/4:1+i915-unordered23:42:1210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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