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2026-06-08 - 19:05
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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 Jun 08, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1541123624,0sleep00-21swapper/007:19:550
2204023526,0sleep30-21swapper/307:22:583
2182423127,0sleep20-21swapper/207:20:292
2190423026,0sleep10-21swapper/107:21:241
222639999,0cyclictest6520-21awk10:59:591
339960,0migration/38301-21fschecks_time11:19:573
339960,0migration/35959-21sh12:30:193
339960,0migration/327977-21munin-node10:34:573
339960,0migration/319941-21timerwakeupswit09:50:103
339960,0migration/318391-21sh11:44:463
339960,0migration/315907-21sh12:39:013
339960,0migration/313300-21sh12:17:573
339960,0migration/312377-21kthreadcore10:25:003
329960,0watchdog/33902-21cut11:35:023
329960,0watchdog/326453-21ssh10:34:143
29815060,0irq/29-eth0-tx-19197-21munin-node08:30:050
29805060,0irq/28-eth0-rx-1397-21grep09:40:013
339950,0migration/39205-21kthreadcore07:35:013
339950,0migration/37008-21kthreadcore08:40:013
339950,0migration/36033-21if_eth1.209:05:003
339950,0migration/35534-21kthreadcore10:20:023
339950,0migration/35237-21kthreadcore07:55:013
339950,0migration/33828-21fschecks_count10:39:563
339950,0migration/331305-21fschecks_count09:59:563
339950,0migration/329998-21latency_hist08:59:433
339950,0migration/329549-21latency_hist07:29:423
339950,0migration/328872-21munin-run10:54:433
339950,0migration/327877-21kthreadcore09:55:003
339950,0migration/325860-21sh09:35:403
339950,0migration/32485-21kthreadcore11:15:033
339950,0migration/322968-21munin-node08:54:553
339950,0migration/320925-21kthreadcore08:05:003
339950,0migration/31820-21kthreadcore12:10:043
339950,0migration/315754-21munin-node08:49:553
339950,0migration/314284-21latency08:45:013
339950,0migration/313204-21kthreadcore11:39:593
339950,0migration/31145-21latency_hist12:49:443
339950,0migration/310657-21fschecks_time09:29:563
329950,0watchdog/323494-21grep08:09:583
329950,0watchdog/316666-21fschecks_time10:09:583
329950,0watchdog/315842-21tr07:40:013
329950,0watchdog/315426-21kthreadcore12:00:023
29815050,0irq/29-eth0-tx-30025-21munin-node09:00:070
29815050,0irq/29-eth0-tx-22857-21munin-node08:55:000
29805050,0irq/28-eth0-rx-8042-21fschecks_time10:04:563
29805050,0irq/28-eth0-rx-4576-21grep11:55:003
29805050,0irq/28-eth0-rx-29861-21cut11:50:023
29805050,0irq/28-eth0-rx-2897-21irqrtprio09:25:003
29805050,0irq/28-eth0-rx-27743-21cut10:15:003
29805050,0irq/28-eth0-rx-26017-21latency_hist07:49:423
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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