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2025-12-11 - 08:36
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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 rack0slot7.osadl.org (updated Thu Dec 11, 2025 00:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
359821899281272,8cyclictest390842-21Renderer19:20:520
3598265992800,279cyclictest0-21swapper/1419:21:466
359825899278277,1cyclictest0-21swapper/1219:20:424
359826799273273,0cyclictest0-21swapper/1519:21:077
359824599272269,2cyclictest0-21swapper/819:20:5214
359825199264258,5cyclictest323654-21Xorg19:21:002
359823799222218,3cyclictest3834819-21Renderer19:21:4712
359824999217213,3cyclictest323654-21Xorg19:21:0715
35977292210187,14sleep100-21swapper/1019:08:222
359822699203201,2cyclictest0-21swapper/419:20:5810
35975732199175,15sleep70-21swapper/719:07:1513
35963822189177,7sleep20-21swapper/219:05:348
35974282182159,15sleep110-21swapper/1119:06:143
35976802173150,15sleep50-21swapper/519:08:0111
35974302151129,14sleep120-21swapper/1219:06:154
35976152146123,16sleep90-21swapper/919:07:3415
359822099128127,1cyclictest0-21swapper/219:21:008
359823999124120,3cyclictest323654-21Xorg19:21:0213
3597549211843,66sleep140-21swapper/1419:07:066
359821999117117,0cyclictest0-21swapper/119:21:071
3597434211179,29sleep150-21swapper/1519:06:197
35964532110107,1sleep30-21swapper/319:05:349
3597372210697,6sleep80-21swapper/819:05:5514
359775629794,1sleep60-21swapper/619:08:3412
3598255999494,0cyclictest0-21swapper/1122:56:063
3598220998166,11cyclictest390347-21seamonkey23:17:568
359780128076,2sleep130-21swapper/1319:08:575
3598219997268,3cyclictest0-21swapper/123:15:091
3598219997139,4cyclictest201rcu_preempt23:21:431
3598220997031,39cyclictest3834766-21IPC8
359826099683,18cyclictest323925-21gnome-shell23:17:325
359823999662,2cyclictest323925-21gnome-shell21:50:0413
3598226996442,21cyclictest0-21swapper/421:54:1610
359775326446,11sleep40-21swapper/419:08:3210
359766626447,12sleep10-21swapper/119:07:581
359612726445,14sleep00-21swapper/019:05:320
359826099638,11cyclictest3834737-21firefox23:12:215
359826099637,10cyclictest254928-21dav1d-worker22:51:035
359823999611,6cyclictest324194-21gdbus22:42:5413
359825199579,25cyclictest699033-21Isolated09:53:582
3598245995723,33cyclictest267454-21kthreadcore22:50:2514
3598239995712,38cyclictest323654-21Xorg23:17:0113
3598245995629,26cyclictest0-21swapper/822:42:1414
3598237995651,2cyclictest0-21swapper/600:34:4112
3598237995651,2cyclictest0-21swapper/600:34:4112
359822699563,29cyclictest0-21swapper/422:21:0710
3598267995529,14cyclictest0-21swapper/1523:18:027
359826099553,18cyclictest254928-21dav1d-worker22:47:035
3598258995540,5cyclictest201rcu_preempt21:45:264
359823999541,44cyclictest0-21swapper/722:56:4913
359823999540,5cyclictest679378-21dav1d-worker00:36:4013
3598245995323,1cyclictest0-21swapper/800:36:3214
3598219995348,2cyclictest0-21swapper/123:05:131
359823999522,16cyclictest3834737-21firefox23:02:3313
3598237995247,3cyclictest871ktimers/622:49:5212
3598231995235,7cyclictest0-21swapper/522:54:2111
3598226995223,3cyclictest3834898-21WRScene~ilder#122:14:5010
3598226995223,3cyclictest3834898-21WRScene~ilder#122:14:4910
3598223995240,9cyclictest0-21swapper/322:15:419
3598220995218,27cyclictest3834898-21WRScene~ilder#123:01:128
359826099511,17cyclictest3834737-21firefox23:05:475
359822399513,45cyclictest323925-21gnome-shell21:04:329
3598218995126,23cyclictest4193455-21AudioIP~ent09:53:580
3598239995025,23cyclictest971ktimers/723:12:3713
3598237995047,2cyclictest0-21swapper/622:14:1112
3598237995047,2cyclictest0-21swapper/622:14:1112
3598219995034,12cyclictest401800-21Timer22:43:231
3598260994945,4cyclictest2343-21snmpd22:28:055
3598260994919,26cyclictest3738484-21TaskCon~ller5
3598237994926,22cyclictest0-21swapper/622:57:0012
3598255994845,2cyclictest0-21swapper/1123:01:213
3598239994816,32cyclictest3834833-21Compositor22:51:1813
3598239994816,31cyclictest323654-21Xorg20:37:3713
359823799489,38cyclictest0-21swapper/623:14:1112
359823799480,48cyclictest0-21swapper/620:24:2012
3598226994845,2cyclictest3871227-21Isolated09:53:5810
3598220994821,0cyclictest0-21swapper/220:12:308
3598219994842,2cyclictest201rcu_preempt21:49:501
3598219994816,20cyclictest37-21ksoftirqd/123:00:461
3598260994716,26cyclictest0-21swapper/1321:45:135
359826099471,45cyclictest4193273-21TaskCon~ller5
359823999473,39cyclictest323925-21gnome-shell22:21:0713
3598237994724,3cyclictest22873-21kworker/u64:5+events_unbound22:41:1012
3598231994744,2cyclictest3738430-21Isolated09:53:5811
3598231994739,7cyclictest0-21swapper/523:02:1111
3598255994645,1cyclictest0-21swapper/1123:13:303
3598255994637,5cyclictest0-21swapper/1122:45:363
3598237994612,34cyclictest0-21swapper/620:16:5212
359823799460,46cyclictest0-21swapper/621:46:5812
3598226994644,1cyclictest0-21swapper/422:45:3110
3598226994633,3cyclictest201rcu_preempt23:19:4610
3598220994629,12cyclictest0-21swapper/221:49:168
3598218994642,1cyclictest1725187-21x0vncserver23:18:320
359826799456,20cyclictest0-21swapper/1522:55:257
3598260994540,1cyclictest0-21swapper/1322:15:405
3598260994532,12cyclictest3573617-21Isolated09:53:585
3598255994544,1cyclictest0-21swapper/1122:28:493
3598239994522,17cyclictest0-21swapper/721:56:0713
3598239994515,5cyclictest390759-21thunderbird23:20:5613
3598237994532,8cyclictest3738430-21Isolated09:53:5812
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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