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2026-03-18 - 20:54
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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 Wed Mar 18, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
48139919740,1973cyclictest6762-21modprobe19:10:137
4786995507,44cyclictest0-21swapper/921:23:5915
47709954445,498cyclictest0-21swapper/423:06:5910
480899535534,1cyclictest162399-21kworker/14:8+i915-unordered22:31:596
4770995323,29cyclictest0-21swapper/400:36:5910
477599507506,1cyclictest0-21swapper/622:31:5912
477099491490,1cyclictest0-21swapper/420:00:5910
477299487485,2cyclictest33463-21kworker/5:1+i915-unordered19:51:5911
477599481481,0cyclictest134128-21kworker/6:2+i915-unordered21:57:5912
480899479479,0cyclictest0-21swapper/1421:57:596
480399463461,2cyclictest188520-21kworker/12:0+i915-unordered23:06:594
480399462461,1cyclictest13377-21kworker/12:0+i915-unordered20:00:594
477299460459,0cyclictest86013-21kworker/5:2+i915-unordered21:03:5911
475599460459,1cyclictest69750irq/159-i91522:31:590
475799459457,1cyclictest93911-21kworker/1:1+i915-unordered21:23:591
481399456454,2cyclictest0-21swapper/1500:27:597
48059945221,29cyclictest0-21swapper/1320:56:205
480399452451,1cyclictest266968-21kworker/12:0+i915-unordered00:36:594
478499447446,1cyclictest0-21swapper/821:23:5914
47629944719,30cyclictest0-21swapper/223:52:428
47629944719,30cyclictest0-21swapper/223:52:428
47579944620,30cyclictest202757-21sleep23:19:541
47709944523,29cyclictest0-21swapper/421:06:5910
47709944523,29cyclictest0-21swapper/421:06:5910
4770994450,30cyclictest0-21swapper/422:22:5910
4772994440,28cyclictest0-21swapper/522:16:5911
48059944321,421cyclictest0-21swapper/1321:08:205
48059944321,421cyclictest0-21swapper/1321:08:205
4784994431,441cyclictest97-21ksoftirqd/821:57:5914
48059944223,418cyclictest0-21swapper/1322:25:455
478499441440,1cyclictest0-21swapper/821:53:5914
475599441441,0cyclictest69750irq/159-i91521:05:590
475599441441,0cyclictest69750irq/159-i91521:05:590
475599441439,1cyclictest69750irq/159-i91521:23:590
48059944019,419cyclictest0-21swapper/1322:09:435
481399439437,2cyclictest80514-21kworker/15:0+i915-unordered20:51:597
4772994380,437cyclictest0-21swapper/522:03:3111
48139943711,425cyclictest0-21swapper/1523:39:547
47729943711,30cyclictest0-21swapper/522:24:1911
479299435434,1cyclictest0-21swapper/1021:40:572
478499435433,2cyclictest0-21swapper/820:06:5914
47729943513,29cyclictest0-21swapper/521:20:5911
47729943513,29cyclictest0-21swapper/520:53:5911
47729943411,30cyclictest0-21swapper/522:46:5911
475599434433,1cyclictest69750irq/159-i91521:53:590
475599433433,0cyclictest69750irq/159-i91521:57:590
480399431430,1cyclictest0-21swapper/1223:11:594
477099431431,0cyclictest0-21swapper/422:30:2010
47579943122,409cyclictest0-21swapper/122:08:591
4805994294,29cyclictest0-21swapper/1319:15:225
481399428425,2cyclictest94114-21kworker/15:1+pm21:01:327
48059942815,412cyclictest0-21swapper/1300:08:205
480399428425,2cyclictest49575-21kworker/u64:2+events_unbound20:56:594
475599427426,1cyclictest69750irq/159-i91520:06:590
4762994260,27cyclictest0-21swapper/219:27:428
4762994260,26cyclictest0-21swapper/222:14:208
4762994260,25cyclictest0-21swapper/223:02:418
4762994250,26cyclictest0-21swapper/222:32:428
4762994250,26cyclictest0-21swapper/221:15:448
4813994246,30cyclictest0-21swapper/1500:17:597
4786994246,29cyclictest0-21swapper/923:59:5415
4784994240,0cyclictest0-21swapper/819:53:5914
47629942426,397cyclictest0-21swapper/221:51:428
4762994240,27cyclictest0-21swapper/220:22:458
4762994240,26cyclictest0-21swapper/220:34:218
4762994240,26cyclictest0-21swapper/219:49:228
480599423423,0cyclictest0-21swapper/1319:53:595
479299423422,1cyclictest0-21swapper/1019:50:322
47869942325,397cyclictest0-21swapper/919:42:2215
47869942324,398cyclictest0-21swapper/921:37:2115
47869942322,400cyclictest0-21swapper/923:11:2215
47709942324,398cyclictest0-21swapper/421:49:5410
4762994230,27cyclictest0-21swapper/223:45:418
4762994230,27cyclictest0-21swapper/223:45:418
48059942223,397cyclictest0-21swapper/1320:31:215
4805994220,30cyclictest0-21swapper/1322:51:225
4805994220,29cyclictest0-21swapper/1321:17:215
47869942224,397cyclictest0-21swapper/919:39:2215
47869942223,398cyclictest0-21swapper/923:46:2015
47869942223,398cyclictest0-21swapper/923:46:2015
47629942224,396cyclictest0-21swapper/221:26:428
475599422420,1cyclictest69750irq/159-i91522:00:590
48059942124,396cyclictest0-21swapper/1323:27:205
48059942123,395cyclictest0-21swapper/1322:15:415
48059942121,396cyclictest0-21swapper/1321:38:205
47869942122,398cyclictest0-21swapper/919:27:2215
47809942126,394cyclictest0-21swapper/719:28:5913
47809942126,394cyclictest0-21swapper/700:22:5913
476599421419,2cyclictest126192-21kworker/3:2+pm21:40:579
475599421420,1cyclictest69750irq/159-i91522:18:590
475599421419,1cyclictest69750irq/159-i91519:53:590
48059942022,397cyclictest0-21swapper/1321:47:205
48059942022,396cyclictest0-21swapper/1323:15:445
48059942022,396cyclictest0-21swapper/1319:14:215
48059942021,397cyclictest0-21swapper/1321:51:205
480399420420,0cyclictest0-21swapper/1222:41:114
47869942022,397cyclictest0-21swapper/923:31:2015
47869942021,398cyclictest0-21swapper/923:36:2115
47869942021,398cyclictest0-21swapper/923:19:2015
47869942021,398cyclictest0-21swapper/920:29:5415
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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