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2026-07-30 - 22:26
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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 Thu Jul 30, 2026 12:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5732002930,1sleep7573202-21ssh11:20:527
447899550,53cyclictest253714-21sshd-session09:12:207
400025217,30sleep70-21swapper/707:06:357
400025217,30sleep70-21swapper/707:06:357
4478994035,4cyclictest106185-21latency_hist07:58:567
404524030,7sleep50-21swapper/507:07:135
404524030,7sleep50-21swapper/507:07:135
418868323928,8sleep40-21swapper/407:03:594
418868323928,8sleep40-21swapper/407:03:594
6605492340,1chrt660548-21ssh11:58:197
4470993331,2cyclictest96664-21kworker/u16:2+events_unbound09:24:115
4478992924,4cyclictest415245-21latency_hist10:18:557
4478992824,3cyclictest280687-21sshd-session09:24:097
4475992824,3cyclictest155142-21kworker/u16:3+flush-8:008:39:136
407322817,8sleep60-21swapper/607:07:386
407322817,8sleep60-21swapper/607:07:386
4470992725,2cyclictest573614-21kworker/u16:1+events_unbound11:30:345
4478992625,0cyclictest0-21swapper/708:49:557
4478992625,0cyclictest0-21swapper/708:47:217
4478992625,0cyclictest0-21swapper/708:15:147
4475992623,2cyclictest96664-21kworker/u16:2+flush-8:009:39:276
4478992524,0cyclictest0-21swapper/709:06:467
4478992524,0cyclictest0-21swapper/708:28:147
4478992524,0cyclictest0-21swapper/707:13:507
4478992523,1cyclictest584728-21ssh11:24:307
4478992423,0cyclictest0-21swapper/708:35:537
4478992423,0cyclictest0-21swapper/707:48:027
4478992419,4cyclictest341384-21latency_hist09:48:557
4475992422,2cyclictest223116-21kworker/u16:1+flush-8:009:59:076
4478992322,0cyclictest0-21swapper/710:26:367
4478992322,0cyclictest0-21swapper/709:15:127
4478992322,0cyclictest0-21swapper/707:31:267
4478992322,0cyclictest0-21swapper/707:28:147
4478992322,0cyclictest0-21swapper/707:16:297
4478992321,1cyclictest316795-21ssh09:38:517
4478992321,1cyclictest0-21swapper/709:59:067
4475992321,2cyclictest223116-21kworker/u16:1+flush-8:009:17:526
4470992320,2cyclictest96664-21kworker/u16:2+flush-8:008:34:215
4478992221,0cyclictest0-21swapper/708:11:317
4469992220,2cyclictest449741-21kworker/u16:0+flush-8:010:44:064
4478992120,0cyclictest0-21swapper/709:42:127
4478992120,0cyclictest0-21swapper/708:39:207
4478992119,1cyclictest535716-21ssh11:04:317
4478992119,1cyclictest352049-21ssh09:51:027
4478992119,1cyclictest0-21swapper/707:39:097
4478992116,3cyclictest1085-21runrttasks11:29:217
4469992119,2cyclictest449741-21kworker/u16:0+flush-8:010:34:054
4478992019,0cyclictest0-21swapper/711:47:347
4478992018,1cyclictest242355-21diskmemload10:42:337
4478992018,1cyclictest0-21swapper/711:59:067
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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