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2026-06-15 - 12:08
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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 15, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2028023824,0sleep00-21swapper/019:21:370
2027023626,0sleep10-21swapper/119:21:301
2052523424,0sleep20-21swapper/219:24:272
2045223127,0sleep30-21swapper/319:23:403
35160,0ktimersoftd/30-21swapper/320:20:353
339960,0migration/39724-21sh21:45:483
339960,0migration/321777-21aten_r1power_po00:25:283
339960,0migration/317169-21sh21:35:003
339960,0migration/315096-21sh23:40:563
29815060,0irq/29-eth0-tx-21126-21munin-node20:10:400
29805060,0irq/28-eth0-rx-6074-21perl22:05:293
29805060,0irq/28-eth0-rx-25289-21ssh21:38:083
29805060,0irq/28-eth0-rx-24751-21fschecks_count00:45:283
29805060,0irq/28-eth0-rx-20402-21basename00:05:313
206699965,0cyclictest17255-21crond21:35:152
206659960,0cyclictest18-21rcuc/119:40:251
206659960,0cyclictest0-21swapper/100:54:001
206649963,0cyclictest10963-21kworker/0:023:15:300
149960,0migration/029486-21irqrtprio00:10:330
149960,0migration/027496-21munin-node20:55:350
149960,0migration/027338-21sh21:56:390
8305050,0irq/26-0000:00:1752-21latency_hist23:55:162
4150,0ktimersoftd/00-21swapper/022:38:110
4150,0ktimersoftd/00-21swapper/021:47:010
4150,0ktimersoftd/00-21swapper/021:20:280
339950,0migration/38546-21kthreadcore20:00:323
339950,0migration/38404-21fschecks_time22:25:293
339950,0migration/36811-21latency_hist20:45:153
339950,0migration/332191-21taskset21:25:063
339950,0migration/329367-21kthreadcore19:50:343
339950,0migration/32858-21taskset20:19:043
339950,0migration/327045-21irqrtprio23:50:323
339950,0migration/326143-21irqcore20:35:313
339950,0migration/324687-21kthreadcore19:25:313
339950,0migration/323018-21diskmemload23:30:113
339950,0migration/322571-21aten_r1power_cu22:15:253
339950,0migration/322529-21kthreadcore21:55:333
339950,0migration/321871-21kthreadcore22:30:343
339950,0migration/321418-21latency_hist20:55:153
339950,0migration/314273-21irqcore00:20:333
339950,0migration/31097-21diskmemload23:35:333
329950,0watchdog/329634-21fschecks_time22:00:303
329950,0watchdog/324988-21ssh22:35:263
329950,0watchdog/320815-21uptime20:50:423
329950,0watchdog/318961-21grep22:50:263
329950,0watchdog/318378-21perl20:30:303
329950,0watchdog/31701-21yum22:55:423
329950,0watchdog/316408-21smartctl00:40:313
329950,0watchdog/312717-21users23:20:423
329950,0watchdog/30-21swapper/321:40:343
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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