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2026-04-17 - 23:47
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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 50 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
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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