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2026-08-07 - 09:01
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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 Aug 07, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3091746995376,530cyclictest0-21swapper/1319:12:355
3091746995376,530cyclictest0-21swapper/1319:12:355
30917079953615,519cyclictest0-21swapper/423:56:3510
309171299518516,2cyclictest3091231-21kworker/5:1+i915-unordered19:12:3511
309171299518516,2cyclictest3091231-21kworker/5:1+i915-unordered19:12:3511
309171599510510,0cyclictest0-21swapper/623:16:3512
309170399505503,2cyclictest3184732-21kworker/3:2+i915-unordered21:01:359
309169299501500,1cyclictest0-21swapper/020:19:350
30917499949412,478cyclictest0-21swapper/1422:14:356
3091715994920,491cyclictest0-21swapper/622:54:3512
30917549948621,464cyclictest0-21swapper/1522:14:357
309174999486485,1cyclictest3284129-21kworker/14:1+i915-unordered23:06:356
309172099477475,2cyclictest0-21swapper/723:19:3513
309172099476417,59cyclictest0-21swapper/721:58:3513
309172099476417,59cyclictest0-21swapper/721:58:3513
30917389947425,30cyclictest0-21swapper/1123:44:563
30916969947427,30cyclictest0-21swapper/121:34:571
30917019947227,28cyclictest43-21ksoftirqd/221:41:358
30917019947219,59cyclictest43-21ksoftirqd/219:23:358
30917079947024,29cyclictest0-21swapper/422:51:1610
30917209946917,29cyclictest0-21swapper/722:58:5713
309171599469468,1cyclictest3241286-21kworker/6:2+i915-unordered22:14:3512
30917159946819,30cyclictest0-21swapper/620:28:1712
30917019946820,30cyclictest0-21swapper/221:10:568
30917209946719,29cyclictest0-21swapper/720:05:2113
30917159946720,29cyclictest0-21swapper/620:17:1812
30917209946516,28cyclictest0-21swapper/700:08:5713
30917159946317,29cyclictest0-21swapper/623:06:5612
30917159946316,28cyclictest0-21swapper/620:11:5812
30917079946313,30cyclictest0-21swapper/423:52:5610
30917319946212,30cyclictest0-21swapper/1019:49:572
30917209946212,29cyclictest0-21swapper/722:06:5713
30917499946121,29cyclictest0-21swapper/1422:33:356
30917129946117,30cyclictest0-21swapper/519:18:3511
30917129946117,30cyclictest0-21swapper/519:18:3511
30917159946012,29cyclictest0-21swapper/621:20:5712
30917079946013,28cyclictest0-21swapper/421:07:5610
30917079945912,28cyclictest0-21swapper/400:18:5610
30917079945911,29cyclictest0-21swapper/419:51:5710
30917079945812,29cyclictest0-21swapper/419:35:1910
3091707994578,28cyclictest0-21swapper/419:58:5810
3091715994568,447cyclictest0-21swapper/620:40:3112
3091707994568,29cyclictest0-21swapper/421:18:5810
30917079945612,28cyclictest0-21swapper/420:56:5710
30917079945611,29cyclictest0-21swapper/421:46:5710
3091720994557,30cyclictest0-21swapper/722:02:5713
3091720994557,30cyclictest0-21swapper/722:02:5713
3091720994557,29cyclictest0-21swapper/719:42:5713
3091712994552,452cyclictest0-21swapper/523:39:3511
309175499454453,1cyclictest3295453-21kworker/15:1+i915-unordered23:19:357
309174999454453,1cyclictest0-21swapper/1420:19:356
3091738994546,30cyclictest0-21swapper/1123:32:193
309173199453452,1cyclictest0-21swapper/1020:37:312
3091707994524,29cyclictest0-21swapper/420:47:5810
3091720994518,30cyclictest0-21swapper/722:52:3513
309172099451450,1cyclictest69750irq/159-i91522:14:3513
3091707994512,30cyclictest0-21swapper/423:35:5810
3091696994519,29cyclictest0-21swapper/120:16:561
3091696994512,29cyclictest0-21swapper/100:00:201
309174699450449,1cyclictest0-21swapper/1323:56:355
309170399450449,1cyclictest0-21swapper/322:58:479
3091696994503,29cyclictest0-21swapper/119:22:201
3091696994502,30cyclictest0-21swapper/119:48:581
309171299449449,0cyclictest0-21swapper/520:56:4611
3091696994496,29cyclictest0-21swapper/120:21:571
309173199448446,1cyclictest3245073-21kworker/10:1+events22:29:202
30917159944824,30cyclictest0-21swapper/619:22:3512
309174699447445,1cyclictest3309579-21kworker/13:2+i915-unordered23:44:355
309175499446443,3cyclictest1818-21snmpd00:12:107
3091715994461,29cyclictest0-21swapper/622:47:2012
30917019944623,419cyclictest0-21swapper/222:40:578
30917159944526,418cyclictest0-21swapper/620:09:1712
30917159944526,418cyclictest0-21swapper/619:39:5812
30917389944325,417cyclictest0-21swapper/1121:01:353
30917159944323,419cyclictest0-21swapper/619:59:1912
30917019944325,418cyclictest0-21swapper/223:25:588
30917019944323,419cyclictest0-21swapper/222:11:208
30917019944323,417cyclictest0-21swapper/219:46:178
3091701994430,30cyclictest3181057-21sleep21:00:308
30917209944216,28cyclictest0-21swapper/700:13:5713
30917019944224,418cyclictest0-21swapper/222:59:198
30917019944224,417cyclictest0-21swapper/221:37:588
30917209944120,420cyclictest0-21swapper/722:46:5713
30917159944122,417cyclictest0-21swapper/621:00:5612
30917019944122,418cyclictest0-21swapper/222:22:588
30917019944122,418cyclictest0-21swapper/221:21:568
30917439944025,414cyclictest0-21swapper/1220:43:354
309172699440437,2cyclictest3087154-21kworker/u64:13+events_unbound19:31:5715
30917209944019,418cyclictest0-21swapper/721:04:1913
30917159944020,417cyclictest0-21swapper/621:05:5712
30917079944019,420cyclictest0-21swapper/423:01:5610
30917019944022,417cyclictest0-21swapper/223:07:198
30917019944022,417cyclictest0-21swapper/222:08:578
30917019944022,415cyclictest0-21swapper/222:36:208
30917019944021,418cyclictest0-21swapper/221:28:198
30917019944021,418cyclictest0-21swapper/221:09:568
30917019944020,419cyclictest0-21swapper/223:04:198
30917159943918,420cyclictest0-21swapper/620:30:5712
30917079943920,418cyclictest0-21swapper/423:10:1810
30917079943920,418cyclictest0-21swapper/421:33:2010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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