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2026-05-28 - 05:56
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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 Thu May 28, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
39000769954626,519cyclictest0-21swapper/1121:51:493
390008999507505,2cyclictest0-21swapper/1421:29:496
390008999507505,2cyclictest0-21swapper/1421:09:496
39000859950212,489cyclictest0-21swapper/1320:09:495
390004399500498,2cyclictest4028074-21kworker/3:2+i915-unordered21:51:499
390005499484483,1cyclictest0-21swapper/620:36:4912
39000479948017,460cyclictest0-21swapper/419:44:4910
39000509947323,30cyclictest0-21swapper/520:23:1311
390005099472470,2cyclictest3683825-21kworker/5:3+i915-unordered20:09:4911
390008599471441,30cyclictest0-21swapper/1319:44:495
390008199471469,1cyclictest3965041-21kworker/12:1+i915-unordered20:50:494
39000509947122,29cyclictest0-21swapper/519:33:3311
39000509947122,29cyclictest0-21swapper/519:33:3311
390008999470470,0cyclictest3961063-21kworker/14:2+i915-unordered21:05:496
39000629947023,29cyclictest0-21swapper/823:48:3414
39000509947021,30cyclictest0-21swapper/520:15:1011
39000359947021,30cyclictest0-21swapper/122:28:121
390004399469469,0cyclictest0-21swapper/321:14:499
39000509946818,30cyclictest0-21swapper/520:40:1211
39000629946620,30cyclictest0-21swapper/821:01:3414
39000509946618,28cyclictest0-21swapper/523:03:3511
39000629946516,448cyclictest0-21swapper/819:46:1014
39000509946517,30cyclictest0-21swapper/519:52:1111
39000509946517,29cyclictest0-21swapper/520:06:1211
39000509946516,28cyclictest0-21swapper/520:47:1011
390008999464457,6cyclictest1818-21snmpd21:54:236
39000509946417,29cyclictest0-21swapper/522:25:3511
39000509946417,29cyclictest0-21swapper/522:25:3511
39000509946416,28cyclictest0-21swapper/519:39:1211
39000509946415,30cyclictest0-21swapper/521:09:1011
39000509946317,29cyclictest0-21swapper/523:44:1011
39000509946317,29cyclictest0-21swapper/521:51:1011
39000359946314,29cyclictest0-21swapper/120:44:331
390007699462461,1cyclictest0-21swapper/1100:26:493
390004799461460,1cyclictest69750irq/159-i91520:50:4910
39000899946021,30cyclictest0-21swapper/1422:56:496
3900081994600,459cyclictest0-21swapper/1219:38:014
39000669946016,29cyclictest0-21swapper/919:41:4915
39000629946013,29cyclictest0-21swapper/820:47:3314
39000629945912,30cyclictest0-21swapper/821:49:3314
39000509945811,29cyclictest0-21swapper/520:52:3311
39000629945711,28cyclictest0-21swapper/820:13:3114
390004799457452,4cyclictest1818-21snmpd19:38:0110
390008999456455,1cyclictest0-21swapper/1421:15:496
3900050994568,30cyclictest0-21swapper/521:07:1211
3900054994555,448cyclictest0-21swapper/622:15:1012
3900054994555,448cyclictest0-21swapper/622:15:1012
3900054994543,30cyclictest0-21swapper/620:19:3412
3900050994534,30cyclictest0-21swapper/519:58:1011
390008999449447,2cyclictest3961063-21kworker/14:2+i915-unordered20:36:496
390006699449449,0cyclictest0-21swapper/919:25:4915
390006699449449,0cyclictest0-21swapper/919:25:4915
3900054994494,30cyclictest79-21ksoftirqd/622:04:4912
39000509944922,30cyclictest0-21swapper/520:57:3411
3900089994473,30cyclictest0-21swapper/1420:18:496
3900038994470,446cyclictest0-21swapper/222:13:498
3900038994470,446cyclictest0-21swapper/222:13:498
39000669944628,417cyclictest0-21swapper/921:26:4915
39000509944626,417cyclictest0-21swapper/523:51:1111
39000509944619,30cyclictest0-21swapper/520:34:3111
390004399446445,1cyclictest4154305-21kworker/3:0+i915-unordered00:26:499
3900062994450,27cyclictest0-21swapper/823:55:3314
39000509944519,29cyclictest0-21swapper/500:00:1111
3900043994452,442cyclictest0-21swapper/321:44:499
39000899944422,28cyclictest0-21swapper/1400:31:496
390008199444443,1cyclictest0-21swapper/1220:36:494
39000629944419,29cyclictest0-21swapper/823:34:3214
39000509944416,30cyclictest0-21swapper/522:46:1111
39000769944321,421cyclictest0-21swapper/1120:28:103
3900062994430,26cyclictest0-21swapper/800:20:3114
39000669944223,418cyclictest0-21swapper/920:39:3415
39000629944217,425cyclictest0-21swapper/800:03:3414
390005099442440,2cyclictest3928851-21kworker/5:0+i915-unordered19:44:4911
39000669944121,419cyclictest0-21swapper/900:00:3515
39000389944117,419cyclictest0-21swapper/220:53:128
39000669944021,418cyclictest0-21swapper/920:15:3215
39000509944023,416cyclictest0-21swapper/523:27:4511
39000669943921,417cyclictest0-21swapper/921:39:1215
39000669943921,417cyclictest0-21swapper/921:04:3215
39000629943920,418cyclictest0-21swapper/823:13:3214
39000769943810,425cyclictest4060915-21find22:23:123
39000769943810,425cyclictest4060915-21find22:23:123
39000669943820,417cyclictest0-21swapper/920:12:3415
39000629943719,418cyclictest0-21swapper/819:31:3314
39000629943719,418cyclictest0-21swapper/819:31:3314
39000629943718,418cyclictest0-21swapper/822:58:3114
39000629943718,418cyclictest0-21swapper/822:03:1114
39000629943713,29cyclictest0-21swapper/800:32:3214
390008999436436,0cyclictest0-21swapper/1420:01:356
39000899943625,410cyclictest3900025-21cyclictest21:18:496
39000899943624,411cyclictest0-21swapper/1422:59:496
390008199436435,1cyclictest69750irq/159-i91519:44:494
390008199436435,1cyclictest0-21swapper/1220:22:114
39000769943620,416cyclictest0-21swapper/1121:46:493
39000769943614,421cyclictest0-21swapper/1120:17:323
39000769943613,422cyclictest0-21swapper/1122:00:323
39000389943617,418cyclictest0-21swapper/219:34:318
39000389943617,418cyclictest0-21swapper/219:34:318
39000769943522,412cyclictest0-21swapper/1121:18:103
39000709943513,421cyclictest0-21swapper/1019:33:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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