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2025-06-17 - 02:10
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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 Tue Jun 17, 2025 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
773424127,0sleep30-21swapper/318:26:363
793923828,0sleep20-21swapper/218:29:032
764023523,0sleep10-21swapper/118:25:301
764423026,0sleep00-21swapper/018:25:330
805499150,0cyclictest19543-21munin-node20:29:450
29925070,0irq/32-eth0-rx-0-21swapper/321:47:243
29925070,0irq/32-eth0-rx-0-21swapper/321:27:363
80549966,0cyclictest0-21swapper/020:24:440
339960,0migration/36899-21sh22:34:143
339960,0migration/324278-21sh22:44:443
339960,0migration/323327-21sh21:07:113
339960,0migration/314710-21irqrtprio23:54:493
329960,0watchdog/318255-21awk20:24:513
329960,0watchdog/30-21swapper/323:44:433
329960,0watchdog/30-21swapper/323:39:033
329960,0watchdog/30-21swapper/323:29:513
329960,0watchdog/30-21swapper/323:26:273
329960,0watchdog/30-21swapper/323:14:273
329960,0watchdog/30-21swapper/323:00:233
329960,0watchdog/30-21swapper/322:43:313
329960,0watchdog/30-21swapper/322:16:433
329960,0watchdog/30-21swapper/321:39:553
329960,0watchdog/30-21swapper/321:35:433
329960,0watchdog/30-21swapper/321:22:193
329960,0watchdog/30-21swapper/320:59:393
329960,0watchdog/30-21swapper/320:56:353
329960,0watchdog/30-21swapper/320:45:073
329960,0watchdog/30-21swapper/320:39:593
329960,0watchdog/30-21swapper/320:30:473
329960,0watchdog/30-21swapper/320:09:513
329960,0watchdog/30-21swapper/319:22:283
329960,0watchdog/30-21swapper/318:54:483
29925060,0irq/32-eth0-rx-28078-21tr22:24:513
29925060,0irq/32-eth0-rx-26952-21perl21:29:463
29925060,0irq/32-eth0-rx-20281-21perl23:19:483
29925060,0irq/32-eth0-rx-17056-21ntp_states23:14:523
29925060,0irq/32-eth0-rx-0-21swapper/323:06:343
29925060,0irq/32-eth0-rx-0-21swapper/322:35:353
29925060,0irq/32-eth0-rx-0-21swapper/322:19:443
29925060,0irq/32-eth0-rx-0-21swapper/322:06:013
29925060,0irq/32-eth0-rx-0-21swapper/322:01:283
29925060,0irq/32-eth0-rx-0-21swapper/321:54:173
29925060,0irq/32-eth0-rx-0-21swapper/321:09:443
29925060,0irq/32-eth0-rx-0-21swapper/320:49:433
29925060,0irq/32-eth0-rx-0-21swapper/318:49:313
149960,0migration/022666-21sh22:40:350
149960,0migration/016526-21sh21:22:120
149960,0migration/014360-21kthreadcore23:34:490
8315050,0irq/26-0000:00:4724-21crond23:49:302
80569950,0cyclictest0-21swapper/223:50:292
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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