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2026-03-31 - 15:24
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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 Tue Mar 31, 2026 12:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
204550225747,7sleep60-21swapper/607:01:266
204550024636,7sleep40-21swapper/407:01:244
2045888994441,2cyclictest2497113-21kworker/u16:4+events_unbound10:47:586
2045888994440,3cyclictest2287864-21kworker/u16:3+events_unbound09:37:586
2045888994340,2cyclictest2164365-21kworker/u16:4+events_unbound09:17:586
204540924232,7sleep50-21swapper/507:00:055
20454292406,30sleep70-21swapper/707:00:237
204589399370,36cyclictest124-21kswapd010:53:067
2045881993735,2cyclictest2400054-21kworker/u16:3+events_unbound10:12:555
2045893993432,1cyclictest2666458-21sh11:42:537
2045881993432,2cyclictest2605578-21kworker/u16:3+events_unbound11:23:055
23839822330,1chrt0-21swapper/609:43:046
2045875993330,2cyclictest2642199-21kworker/u16:5+events_unbound11:38:044
2045888993230,2cyclictest2145400-21kworker/u16:1+flush-8:009:28:146
2045881993230,2cyclictest2287864-21kworker/u16:3+flush-8:009:43:055
2045881993230,2cyclictest2070637-21kworker/u16:2+events_unbound07:13:085
2045875993229,2cyclictest2145400-21kworker/u16:1+flush-8:009:02:594
2045881993129,2cyclictest2377597-21kworker/u16:1+events_unbound09:58:105
2045875993129,2cyclictest2377597-21kworker/u16:1+events_unbound09:47:564
2045888992925,3cyclictest2605578-21kworker/u16:3+flush-8:012:23:006
2045881992927,2cyclictest2688595-21kworker/u16:0+events_unbound11:53:055
2045875992927,2cyclictest2497113-21kworker/u16:4+flush-8:010:47:534
2045875992927,2cyclictest2421818-21kworker/u16:2+events_unbound11:03:014
2045893992828,0cyclictest0-21swapper/712:11:427
2045893992822,5cyclictest650-21systemd-journal10:12:437
204589399280,27cyclictest2097032-21pool-gnome-soft07:24:437
2045881992826,2cyclictest2605578-21kworker/u16:3+flush-8:011:28:085
25675232270,1chrt2567524-21sh10:59:357
204589399270,25cyclictest2368558-21kthreadcore09:38:027
2045881992725,2cyclictest2605578-21kworker/u16:3+events_unbound11:38:005
2045881992725,2cyclictest2377597-21kworker/u16:1+events_unbound09:53:095
2045881992725,2cyclictest2164365-21kworker/u16:4+flush-8:009:33:065
2045875992725,2cyclictest2377597-21kworker/u16:1+flush-8:009:53:004
2045893992624,1cyclictest2279053-21diskmemload10:43:047
2045893992624,1cyclictest0-21swapper/712:02:537
2045888992622,3cyclictest2145400-21kworker/u16:1+flush-8:008:08:096
2045881992624,2cyclictest2605578-21kworker/u16:3+events_unbound11:57:545
2045881992623,2cyclictest2145400-21kworker/u16:1+events_unbound09:27:565
2045875992623,2cyclictest2605578-21kworker/u16:3+events_unbound11:28:024
2045893992525,0cyclictest0-21swapper/709:43:047
2045893992520,4cyclictest2399973-21latency_hist09:52:437
2045888992523,2cyclictest2421818-21kworker/u16:2+flush-8:010:28:036
2045888992523,2cyclictest2421818-21kworker/u16:2+flush-8:010:28:036
2045881992523,2cyclictest2400054-21kworker/u16:3+flush-8:010:32:585
2045881992523,2cyclictest2164365-21kworker/u16:4+flush-8:009:08:055
2045875992523,2cyclictest2145400-21kworker/u16:1+events_unbound08:13:074
2045893992421,1cyclictest0-21swapper/712:13:087
2045881992422,2cyclictest2630124-21kworker/u16:1+events_unbound11:45:535
2045881992422,2cyclictest2497113-21kworker/u16:4+flush-8:011:03:075
2045881992422,2cyclictest2385521-21kworker/u16:2+flush-8:009:48:065
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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