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2026-06-18 - 23:48
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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 Thu Jun 18, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3110023727,0sleep30-21swapper/307:25:133
3104123627,0sleep20-21swapper/207:24:362
3102923228,0sleep00-21swapper/007:24:260
3095923221,0sleep10-21swapper/107:23:391
8305060,0irq/26-0000:00:6077-21crond07:30:313
8305060,0irq/26-0000:00:13277-21munin-run07:35:313
4160,0ktimersoftd/00-21swapper/012:21:290
339960,0migration/39247-21sh11:33:493
339960,0migration/37316-21sh11:14:493
339960,0migration/330534-21sh11:08:423
339960,0migration/330263-21munin-node10:50:473
339960,0migration/316070-21kthreadcore09:05:483
329960,0watchdog/330386-21ssh12:22:083
311979960,0cyclictest0-21swapper/212:34:042
311969960,0cyclictest22096-21ssh11:04:101
29815060,0irq/29-eth0-tx-6528-21munin-node08:15:560
29805060,0irq/28-eth0-rx-13076-21fschecks_time11:55:463
29805060,0irq/28-eth0-rx-11725-21iostat09:25:483
29805060,0irq/28-eth0-rx-10812-21grep10:55:513
19160,0ktimersoftd/10-21swapper/112:21:291
149960,0migration/011303-21sh10:39:380
339950,0migration/39410-21kthreadcore12:10:493
339950,0migration/38864-21hwlatdetect11:15:473
339950,0migration/35129-21kthreadcore12:45:493
339950,0migration/3489-21irqcore08:10:493
339950,0migration/331094-21kthreadcore07:45:493
339950,0migration/329751-21sh09:53:023
339950,0migration/328994-21fschecks_time08:30:453
339950,0migration/32852-21aten_r1power_po07:50:443
339950,0migration/328248-21latency_hist09:15:323
339950,0migration/328147-21kthreadcore08:05:503
339950,0migration/327472-21fschecks_count10:30:453
339950,0migration/326617-21sh10:45:513
339950,0migration/321473-21fschecks_count08:25:453
339950,0migration/321369-21ksmtuned11:02:113
339950,0migration/315489-21kthreadcore07:35:483
339950,0migration/311406-21munin-node12:50:473
329950,0watchdog/36442-21ssh12:26:323
329950,0watchdog/330608-21kthreadcore09:15:473
329950,0watchdog/317199-21entropy12:35:443
329950,0watchdog/316309-21cut10:40:513
329950,0watchdog/315281-21cut07:55:513
329950,0watchdog/30-21swapper/311:42:123
311979955,0cyclictest0-21swapper/211:39:312
311979955,0cyclictest0-21swapper/210:59:102
311979955,0cyclictest0-21swapper/209:37:482
311979950,0cyclictest0-21swapper/212:12:092
311979950,0cyclictest0-21swapper/212:03:202
311979950,0cyclictest0-21swapper/211:46:182
311979950,0cyclictest0-21swapper/211:31:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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