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2026-04-13 - 19:05
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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 Mon Apr 13, 2026 12:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23430982990,1sleep72343099-21ssh09:14:287
207449525836,7sleep60-21swapper/606:58:546
2074995995451,2cyclictest2646248-21kworker/u16:2+flush-8:012:26:515
207452125342,7sleep50-21swapper/506:59:175
2074991994947,2cyclictest2393197-21kworker/u16:0+flush-8:010:02:054
2075001994742,4cyclictest2356454-21latency_hist09:21:517
207455824736,7sleep40-21swapper/406:59:494
2075000994542,3cyclictest2002714-21kworker/u16:1+flush-8:007:24:056
2074995994441,2cyclictest2289113-21kworker/u16:1+flush-8:009:41:515
2075000994240,2cyclictest2332463-21kworker/u16:3+events_unbound09:22:146
2075000994240,2cyclictest2332463-21kworker/u16:3+events_unbound09:22:146
2075001994135,4cyclictest2658320-21latency_hist11:26:507
2075001994034,5cyclictest2320273-21latency_hist09:06:517
2074995994036,3cyclictest2440259-21kworker/u16:2+flush-8:010:32:095
2075001993937,1cyclictest2308216-21diskmemload12:16:047
20745802394,31sleep70-21swapper/707:00:087
2075001993735,1cyclictest0-21swapper/709:31:377
2075001993634,1cyclictest2667894-21ssh11:27:257
2075001993634,1cyclictest2667894-21ssh11:27:257
2074991993634,2cyclictest2477475-21kworker/u16:0+events_unbound11:17:054
2075001993527,2cyclictest2789068-21ssh12:18:437
2075000993532,2cyclictest2440259-21kworker/u16:2+flush-8:009:56:516
2075000993532,2cyclictest2308641-21kworker/u16:2+flush-8:009:07:116
207500199340,33cyclictest6184-21gvfs-afc-volume12:00:367
2075001993332,0cyclictest0-21swapper/710:24:097
2075001993331,1cyclictest2476950-21ssh10:11:047
2075001993330,2cyclictest2501279-21ssh10:21:237
2075000993330,2cyclictest2393197-21kworker/u16:0+flush-8:009:51:466
2075001993231,0cyclictest0-21swapper/710:37:257
2075001993231,0cyclictest0-21swapper/710:37:257
2074995993230,2cyclictest1341679-21kworker/u16:0+events_unbound07:07:065
2075001993129,1cyclictest0-21swapper/707:42:177
2075001993030,0cyclictest0-21swapper/710:36:127
207500199300,28cyclictest2402551-21sh09:37:357
2074995993029,1cyclictest2646248-21kworker/u16:2+events_unbound12:12:415
2074995993028,2cyclictest2778683-21kworker/u16:0+events_unbound12:27:135
2074995993027,3cyclictest2126301-21kworker/u16:5+flush-8:009:17:175
2074991993028,2cyclictest2646248-21kworker/u16:2+flush-8:011:52:164
2074991993028,2cyclictest2550258-21kworker/u16:3+flush-8:011:36:504
2074991993028,2cyclictest2550258-21kworker/u16:3+events_unbound11:37:054
2074991993028,2cyclictest2145858-21kworker/u16:0+events_unbound07:37:064
2075001992929,0cyclictest0-21swapper/712:23:207
2075001992929,0cyclictest0-21swapper/710:03:407
2075001992929,0cyclictest0-21swapper/709:09:247
2075001992928,1cyclictest0-21swapper/711:38:277
2075001992925,3cyclictest124-21kswapd011:52:047
2074995992926,2cyclictest2719029-21kworker/u16:4+flush-8:011:56:565
2075001992828,0cyclictest0-21swapper/712:27:357
2075001992828,0cyclictest0-21swapper/709:25:087
2075001992828,0cyclictest0-21swapper/709:25:087
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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