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2026-05-23 - 17:27
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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 Sat May 23, 2026 12:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
408890426050,7sleep50-21swapper/507:06:225
408928299470,45cyclictest6063-21gdbus09:57:087
408928299470,45cyclictest6063-21gdbus09:57:087
408881924534,8sleep40-21swapper/407:05:094
4089282994337,5cyclictest130023-21latency_hist09:07:267
4089279994240,2cyclictest4150487-21kworker/u16:2+flush-8:007:42:526
4089282994140,0cyclictest0-21swapper/712:02:287
40879872402,31sleep70-21swapper/707:02:557
4089282993735,1cyclictest505134-21ssh11:39:357
4089282993735,1cyclictest275043-21ssh10:05:567
4089282993735,1cyclictest130025-21diskmemload10:30:207
4089282993532,2cyclictest124-21kswapd012:15:487
4089282993433,0cyclictest0-21swapper/710:49:567
4089282993432,1cyclictest130025-21diskmemload11:22:527
4089282993431,2cyclictest81052-21ntpq08:37:507
4089282993332,0cyclictest0-21swapper/712:31:367
4089282993332,0cyclictest0-21swapper/711:17:247
4089282993332,0cyclictest0-21swapper/711:17:247
4089282993331,1cyclictest130025-21diskmemload09:22:047
4089282993130,0cyclictest0-21swapper/711:53:357
4089282993130,0cyclictest0-21swapper/711:53:357
4089282993130,0cyclictest0-21swapper/711:20:087
4089282993130,0cyclictest0-21swapper/708:49:377
4089282993129,1cyclictest130025-21diskmemload10:08:487
4089282993129,1cyclictest130025-21diskmemload09:37:207
4089282993129,1cyclictest130025-21diskmemload09:10:167
4089282993129,1cyclictest0-21swapper/709:48:367
4089282993127,2cyclictest298130-21ssh10:13:327
4089279993129,2cyclictest567359-21kworker/u16:4+events_unbound12:29:366
4089279993129,2cyclictest224815-21kworker/u16:4+flush-8:010:12:416
4089282993029,0cyclictest0-21swapper/709:41:277
4089279993028,2cyclictest119466-21kworker/u16:2+events_unbound10:42:566
4089282992928,0cyclictest0-21swapper/711:45:117
4089282992927,1cyclictest130025-21diskmemload10:00:287
4089282992927,1cyclictest0-21swapper/710:58:487
4089279992927,2cyclictest349191-21kworker/u16:0+events_unbound11:42:156
4089282992827,0cyclictest0-21swapper/712:25:277
4089282992827,0cyclictest0-21swapper/710:41:077
4089282992826,1cyclictest0-21swapper/711:28:357
4089279992825,3cyclictest119466-21kworker/u16:2+flush-8:009:07:526
4089279992825,2cyclictest119466-21kworker/u16:2+events_unbound11:17:266
4089279992822,6cyclictest119466-21kworker/u16:2+flush-8:010:05:166
4089282992726,0cyclictest0-21swapper/709:31:527
4089282992725,1cyclictest553667-21ssh11:59:487
4089282992724,2cyclictest153329-21sh09:15:357
4089282992724,2cyclictest153329-21sh09:15:357
4089279992725,2cyclictest81675-21kworker/u16:3+events_unbound08:56:336
4089279992725,2cyclictest53123-21kworker/u16:0+events_unbound08:44:326
4089279992725,2cyclictest4150487-21kworker/u16:2+events_unbound08:21:236
4089279992725,2cyclictest4097802-21kworker/u16:4+events_unbound08:11:406
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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