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2026-04-16 - 20:00
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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 Apr 16, 2026 12:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
180797127548,8sleep50-21swapper/507:06:145
1808527994539,5cyclictest2032591-21latency_hist09:04:537
18074812401,32sleep70-21swapper/707:05:277
1808527993735,1cyclictest0-21swapper/710:58:197
1808527993733,3cyclictest2530826-21ssh12:29:007
1808526993735,2cyclictest2419094-21kworker/u16:0+events_unbound11:48:406
1808526993735,2cyclictest2419094-21kworker/u16:0+events_unbound11:48:406
1808526993735,2cyclictest2126014-21kworker/u16:3+flush-8:009:43:366
180793423726,8sleep40-21swapper/407:05:404
1808527993635,0cyclictest0-21swapper/710:04:487
1808527993534,0cyclictest0-21swapper/709:37:097
1808527993533,1cyclictest2504719-21ssh12:16:047
1808527993533,1cyclictest0-21swapper/712:32:117
1808527993532,2cyclictest2125700-21ssh09:41:007
1808526993533,2cyclictest2189041-21kworker/u16:4+events_unbound10:11:176
1808527993433,0cyclictest0-21swapper/710:46:287
1808527993431,2cyclictest2077433-21ssh09:22:127
1808526993432,2cyclictest2370053-21kworker/u16:1+events_unbound12:04:526
1808526993432,2cyclictest2311903-21kworker/u16:4+flush-8:012:12:556
1808526993432,2cyclictest2272525-21kworker/u16:0+events_unbound11:06:086
1808526993432,2cyclictest2272525-21kworker/u16:0+events_unbound11:06:086
1808526993432,2cyclictest2272525-21kworker/u16:0+events_unbound11:02:596
1808526993432,2cyclictest2025242-21kworker/u16:1+events_unbound09:12:206
1808526993432,2cyclictest1917210-21kworker/u16:2+events_unbound09:58:296
1808527993332,0cyclictest0-21swapper/710:32:087
1808527993331,1cyclictest2469208-21ssh12:03:047
1808527993328,4cyclictest2213533-21latency_hist10:19:537
1808526993331,2cyclictest2272525-21kworker/u16:0+flush-8:010:41:486
1808526993331,2cyclictest2189041-21kworker/u16:4+flush-8:010:38:436
1808526993331,2cyclictest1917210-21kworker/u16:2+events_unbound10:19:456
1808526993327,6cyclictest2311903-21kworker/u16:4+flush-8:012:05:556
1808527993231,0cyclictest0-21swapper/711:13:247
1808527993231,0cyclictest0-21swapper/710:36:497
1808527993231,0cyclictest0-21swapper/710:22:337
1808527993231,0cyclictest0-21swapper/710:07:077
1808527993229,2cyclictest2162838-21ssh09:56:577
1808526993230,2cyclictest2470278-21kworker/u16:2+events_unbound12:32:566
1808526993230,2cyclictest2454902-21kworker/u16:0+flush-8:011:55:526
1808526993230,2cyclictest2370053-21kworker/u16:1+events_unbound12:18:366
1808526993230,2cyclictest2370053-21kworker/u16:1+events_unbound11:39:006
1808526993230,2cyclictest2370053-21kworker/u16:1+events_unbound11:26:336
1808526993230,2cyclictest2311903-21kworker/u16:4+events_unbound11:33:326
1808526993230,2cyclictest1917210-21kworker/u16:2+flush-8:011:10:476
1808526993230,2cyclictest1917210-21kworker/u16:2+events_unbound09:19:406
1808527993130,0cyclictest0-21swapper/712:37:447
1808527993130,0cyclictest0-21swapper/711:37:247
1808527993130,0cyclictest0-21swapper/711:24:117
1808527993130,0cyclictest0-21swapper/711:09:207
1808527993130,0cyclictest0-21swapper/711:09:207
1808527993130,0cyclictest0-21swapper/710:14:237
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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