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2026-07-04 - 06:18
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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 rack1slot2.osadl.org (updated Sat Jul 04, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1447424839,0sleep20-21swapper/219:23:472
1443223526,0sleep30-21swapper/319:23:203
1467023425,0sleep10-21swapper/119:26:061
1462823423,0sleep00-21swapper/019:25:370
339960,0migration/327694-21aten_r1power_cu22:41:583
339960,0migration/318029-21sh22:34:403
339960,0migration/310341-21munin-node22:47:083
29815060,0irq/29-eth0-tx-18937-21munin-node20:37:040
148979960,0cyclictest0-21swapper/020:46:580
149960,0migration/031829-21sh23:21:050
149960,0migration/031256-21sh00:52:050
149960,0migration/024900-21kthreadcore22:57:070
149960,0migration/024182-21kthreadcore00:12:040
149960,0migration/014525-21sh00:24:140
149960,0migration/010893-21pmu-power00:02:090
4150,0ktimersoftd/00-21swapper/022:37:320
4150,0ktimersoftd/00-21swapper/021:35:220
339950,0migration/37796-21kthreadcore21:32:053
339950,0migration/36221-21irqrtprio21:12:053
339950,0migration/34123-21taskset21:07:373
339950,0migration/330496-21fschecks_time20:22:003
339950,0migration/330215-21kthreadcore19:57:053
339950,0migration/330032-21kthreadcore00:52:043
339950,0migration/327812-21kthreadcore00:32:063
339950,0migration/327106-21munin-node20:42:023
339950,0migration/323086-21kthreadcore19:52:053
339950,0migration/322678-21kthreadcore21:22:063
339950,0migration/318721-21taskset21:18:573
339950,0migration/316863-21aten_r1power_cu22:16:583
339950,0migration/31664-21kthreadcore19:37:053
339950,0migration/315854-21fschecks_time23:11:593
339950,0migration/312507-21idleruntime19:47:003
339950,0migration/311745-21kthreadcore00:42:063
339950,0migration/311053-21aten_r1power_cu23:46:583
329950,0watchdog/38564-21sh22:27:153
329950,0watchdog/33883-21ssh00:00:193
329950,0watchdog/327707-21cut21:02:063
329950,0watchdog/326891-21python21:42:143
329950,0watchdog/325760-21wc22:21:593
329950,0watchdog/30-21swapper/323:17:033
329950,0watchdog/30-21swapper/322:12:033
329950,0watchdog/30-21swapper/321:27:023
29815050,0irq/29-eth0-tx-3948-21ssh00:00:312
29815050,0irq/29-eth0-tx-26862-21perl23:37:012
29815050,0irq/29-eth0-tx-24414-21perl23:16:592
29815050,0irq/29-eth0-tx-17783-21gltestperf22:17:002
29815050,0irq/29-eth0-tx-17031-21kthreadcore20:12:030
29815050,0irq/29-eth0-tx-13891-21ssh00:22:292
29815050,0irq/29-eth0-tx-11981-21munin-node21:17:090
29815050,0irq/29-eth0-tx-10446-21munin-node22:32:032
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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