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2026-05-28 - 10:18
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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 Thu May 28, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1275124031,0sleep10-21swapper/119:23:131
1253824035,0sleep00-21swapper/019:20:440
1273023627,0sleep30-21swapper/319:22:593
1279623228,0sleep20-21swapper/219:23:422
339960,0migration/35443-21taskset23:21:093
339960,0migration/331856-21sh00:52:363
339960,0migration/331656-21irqcore00:34:043
339960,0migration/32972-21sh21:47:003
339960,0migration/328728-21sh22:01:073
339960,0migration/31894-21sh22:43:413
339960,0migration/313331-21kthreadcore19:44:043
339960,0migration/311580-21sh00:19:543
29805060,0irq/28-eth0-rx-7512-21fschecks_time00:39:003
27160,0ktimersoftd/20-21swapper/222:49:062
128759966,0cyclictest83050irq/26-0000:00:21:49:022
8305050,0irq/26-0000:00:28004-21sa100:13:472
339950,0migration/38751-21taskset21:31:503
339950,0migration/37383-21idleruntime22:09:013
339950,0migration/36988-21cpuspeed_turbos23:23:583
339950,0migration/3655-21fschecks_count23:38:593
339950,0migration/331902-21taskset22:23:233
339950,0migration/331806-21fschecks_time19:58:593
339950,0migration/331429-21kthreadcore00:14:053
339950,0migration/329973-21kthreadcore21:24:043
339950,0migration/329525-21kthreadcore19:34:023
339950,0migration/328361-21aten_r1power_vo22:58:583
339950,0migration/326127-21aten_r1power_cu23:53:583
339950,0migration/323264-21taskset00:47:483
339950,0migration/322757-21kthreadcore22:34:053
339950,0migration/322639-21fschecks_time00:29:013
339950,0migration/321522-21fschecks_time20:58:593
339950,0migration/321475-21idleruntime20:14:013
339950,0migration/320683-21sh21:57:403
339950,0migration/319374-21munin-node00:24:083
339950,0migration/319235-21runrttasks20:09:043
339950,0migration/318360-21fschecks_time23:49:013
339950,0migration/317417-21df_abs20:33:583
339950,0migration/317204-21fschecks_count19:49:003
339950,0migration/314518-21munin-node20:54:013
339950,0migration/313110-21kthreadcore22:49:043
339950,0migration/310722-21fschecks_time21:33:593
339950,0migration/310187-21aten_r1power_vo21:13:593
329950,0watchdog/324344-21diskstats23:33:583
329950,0watchdog/322424-21ssh22:16:103
329950,0watchdog/312557-21python20:49:093
329950,0watchdog/30-21swapper/322:46:103
329950,0watchdog/30-21swapper/322:23:583
29815050,0irq/29-eth0-tx-8848-21munin-node23:44:012
29815050,0irq/29-eth0-tx-31439-21munin-node20:44:050
29815050,0irq/29-eth0-tx-31268-21ssh21:24:272
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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