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2026-08-10 - 11:48
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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 Mon Aug 10, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
167324443,0sleep10-21swapper/119:29:371
158323728,0sleep20-21swapper/219:28:342
151523724,0sleep30-21swapper/319:27:473
162423026,0sleep00-21swapper/019:29:000
17649970,0cyclictest0-21swapper/000:24:500
8305060,0irq/26-0000:00:9168-21munin-run20:19:493
339960,0migration/38236-21sh22:02:223
339960,0migration/326079-21sh22:14:373
339960,0migration/324706-21irqcore23:10:063
339960,0migration/321116-21munin-node20:05:043
339960,0migration/313175-21munin-node00:35:113
339960,0migration/311603-21sendmail_mailtr00:15:123
329960,0watchdog/30-21swapper/320:56:483
29815060,0irq/29-eth0-tx-7132-21sendmail_mailtr22:00:132
29815060,0irq/29-eth0-tx-27579-21munin-node20:55:160
17649965,0cyclictest7903-21kworker/0:000:55:070
149960,0migration/02529-21kthreadcore22:55:070
8305050,0irq/26-0000:00:2471-21kauditd21:49:502
8305050,0irq/26-0000:00:0-21swapper/200:59:502
339950,0migration/3863-21kthreadcore20:35:073
339950,0migration/38331-21munin-node21:45:053
339950,0migration/36596-21kthreadcore23:35:083
339950,0migration/36203-21kthreadcore22:40:083
339950,0migration/33976-21pmu-power22:55:103
339950,0migration/33409-21kthreadcore21:20:093
339950,0migration/330364-21kthreadcore22:35:073
339950,0migration/327024-21kthreadcore00:25:133
339950,0migration/326821-21munin-node22:15:013
339950,0migration/326080-21kthreadcore20:50:083
339950,0migration/324997-21kthreadcore21:35:093
339950,0migration/324471-21fschecks_time19:45:033
339950,0migration/324362-21kthreadcore23:45:073
339950,0migration/32345-21taskset20:59:493
339950,0migration/322386-21needreboot19:40:093
339950,0migration/321587-21munin-node22:50:003
339950,0migration/32021-21kthreadcore23:15:083
339950,0migration/318360-21kthreadcore23:05:083
339950,0migration/317359-21kthreadcore00:20:103
339950,0migration/316985-21munin-node23:25:023
339950,0migration/316904-21cpuspeed_turbos20:25:033
339950,0migration/31460-21kthreadcore00:30:083
339950,0migration/314042-21kthreadcore00:00:073
339950,0migration/313482-21kthreadcore20:20:163
339950,0migration/312698-21kthreadcore23:40:083
339950,0migration/31144-21switchtime23:50:173
329950,0watchdog/36314-21runrttasks22:21:533
329950,0watchdog/331630-21idleruntime21:40:043
329950,0watchdog/331218-21kthreadcore20:10:083
329950,0watchdog/326777-40yum-updatesd-he22:31:133
329950,0watchdog/326574-21munin-node00:05:093
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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