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2026-04-17 - 17:55
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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 rack0slot2.osadl.org (updated Fri Apr 17, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
314075225645,8sleep40-21swapper/407:06:334
313189824914,29sleep70-21swapper/707:04:597
314098223928,8sleep50-21swapper/507:09:475
3141286993329,2cyclictest3287868-21runrttasks08:20:167
3141286993226,5cyclictest635-21systemd-journal08:19:497
3141286993126,4cyclictest3534249-21latency_hist10:14:497
314098323120,8sleep60-21swapper/607:09:486
3141276993028,2cyclictest3411978-21kworker/u16:4+flush-8:009:59:494
36314312280,1chrt3631432-21sh10:53:527
3141286992625,0cyclictest0-21swapper/712:05:057
3141286992423,0cyclictest0-21swapper/709:50:087
3141286992418,5cyclictest3164024-21latency_hist07:19:507
3141279992420,3cyclictest3619946-21kworker/u16:1+flush-8:011:24:495
3141279992420,3cyclictest3619946-21kworker/u16:1+flush-8:011:24:495
3141286992216,5cyclictest3729697-21latency_hist11:34:497
3141286992120,0cyclictest0-21swapper/710:35:357
3141286992115,5cyclictest3583172-21latency_hist10:34:497
3141279991912,7cyclictest0-21swapper/511:59:295
3141286991814,2cyclictest3754198-21latency_hist11:44:497
314128699180,16cyclictest3888773-21grep12:39:487
3141276991815,3cyclictest3619946-21kworker/u16:1+flush-8:012:15:454
314128699170,1cyclictest0-21swapper/708:10:137
314128699168,7cyclictest6895-21gmain07:50:117
3141286991613,2cyclictest1234-21snmpd10:49:177
3141286991610,5cyclictest635-21systemd-journal09:06:227
314128699160,2cyclictest3653111-21ssh11:00:127
3141280991613,3cyclictest3619946-21kworker/u16:1+flush-8:011:40:046
3141286991514,0cyclictest0-21swapper/710:55:207
3141286991512,2cyclictest0-21swapper/707:55:147
3141286991510,3cyclictest3221595-21latency_hist07:49:497
314128699150,14cyclictest0-21swapper/711:10:117
314128699150,14cyclictest0-21swapper/709:00:127
314128699150,13cyclictest0-21swapper/711:20:137
314128699150,13cyclictest0-21swapper/711:20:137
3141279991512,2cyclictest3552332-21cut10:20:075
3141279991512,2cyclictest0-21swapper/512:35:145
3141276991514,1cyclictest3269212-21kworker/u16:0+flush-8:008:24:494
3141276991514,1cyclictest0-21swapper/409:11:174
314128699148,5cyclictest3790895-21latency_hist11:59:497
314128699148,5cyclictest3317405-21latency_hist08:39:497
314128699148,5cyclictest3317405-21latency_hist08:39:497
3141286991413,0cyclictest0-21swapper/709:26:567
3141286991412,1cyclictest0-21swapper/708:55:137
3141286991411,2cyclictest635-21systemd-journal08:49:447
3141286991411,2cyclictest0-21swapper/708:24:497
3141286991411,1cyclictest3691807-21ssh11:17:377
314128699140,12cyclictest1234-21snmpd10:42:177
314128699140,12cyclictest1234-21snmpd10:42:177
3141280991413,1cyclictest0-21swapper/611:13:186
3141280991413,1cyclictest0-21swapper/609:45:486
3141280991413,1cyclictest0-21swapper/607:30:036
314128099140,14cyclictest0-21swapper/612:03:356
314128099140,14cyclictest0-21swapper/612:03:356
314128099140,14cyclictest0-21swapper/610:46:396
314128099140,13cyclictest3785495-21cut11:55:076
3141279991413,1cyclictest0-21swapper/512:24:125
3141279991413,1cyclictest0-21swapper/511:14:035
3141279991413,1cyclictest0-21swapper/510:06:535
3141279991413,1cyclictest0-21swapper/509:40:435
314127999140,1cyclictest0-21swapper/507:20:145
314127999140,14cyclictest0-21swapper/511:35:205
3141276991413,1cyclictest0-21swapper/411:34:454
3141276991413,1cyclictest0-21swapper/410:35:004
3141276991413,1cyclictest0-21swapper/409:35:054
3141276991413,1cyclictest0-21swapper/409:23:354
314127699140,1cyclictest0-21swapper/410:48:154
314127699140,14cyclictest0-21swapper/412:12:544
314127699140,14cyclictest0-21swapper/412:04:334
314127699140,14cyclictest0-21swapper/412:04:334
314127699140,14cyclictest0-21swapper/410:24:364
314127699140,14cyclictest0-21swapper/409:47:524
314127699140,0cyclictest0-21swapper/412:21:354
314128699139,3cyclictest5975-21gmain07:25:157
314128699139,3cyclictest1234-21snmpd12:12:027
314128699139,3cyclictest1234-21snmpd08:03:107
314128699136,6cyclictest6382-21gvfs-afc-volume11:07:467
314128699134,7cyclictest6101-21gmain10:15:077
3141286991312,1cyclictest3375117-21diskmemload10:21:577
3141286991310,2cyclictest1234-21snmpd09:17:597
3141286991310,2cyclictest1234-21snmpd09:17:597
314128699130,11cyclictest3842789-21ssh12:20:057
3141280991312,1cyclictest0-21swapper/612:21:156
3141280991312,1cyclictest0-21swapper/611:33:106
3141280991312,1cyclictest0-21swapper/610:23:386
3141280991312,1cyclictest0-21swapper/609:21:226
3141280991312,1cyclictest0-21swapper/608:20:116
314128099130,13cyclictest0-21swapper/611:00:236
314128099130,0cyclictest0-21swapper/612:12:256
3141279991312,1cyclictest0-21swapper/511:47:005
3141279991312,1cyclictest0-21swapper/510:44:535
3141279991312,1cyclictest0-21swapper/509:54:165
3141279991312,1cyclictest0-21swapper/509:28:065
314127999130,1cyclictest0-21swapper/508:46:195
314127999130,13cyclictest0-21swapper/512:06:045
3141276991312,1cyclictest0-21swapper/411:24:404
3141276991312,1cyclictest0-21swapper/411:24:404
3141276991312,1cyclictest0-21swapper/411:01:294
314127699130,13cyclictest0-21swapper/411:55:534
314128699129,2cyclictest1234-21snmpd12:01:137
314128699129,2cyclictest1234-21snmpd12:01:137
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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