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2026-06-21 - 05:41
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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 Sun Jun 21, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1479424940,0sleep20-21swapper/219:25:002
1455123727,0sleep30-21swapper/319:22:043
1460023622,0sleep00-21swapper/019:22:410
792523424,0sleep10-21swapper/119:20:541
339960,0migration/33784-21munin-node21:31:003
339960,0migration/325115-21sh00:48:143
339960,0migration/317379-21sh22:32:323
339960,0migration/315974-21sh23:28:363
339960,0migration/315137-21sh23:10:593
339960,0migration/310377-21kthreadcore22:11:023
329960,0watchdog/39108-21sh22:28:353
329960,0watchdog/3337-21python21:26:073
29815060,0irq/29-eth0-tx-22540-21munin-node20:15:550
29805060,0irq/28-eth0-rx-6763-21sh23:22:083
29805060,0irq/28-eth0-rx-3246-21memory23:01:033
29805060,0irq/28-eth0-rx-30583-21cut23:36:023
29805060,0irq/28-eth0-rx-22208-21cat21:41:033
29805060,0irq/28-eth0-rx-0-21swapper/322:42:003
149349960,0cyclictest0-21swapper/023:26:000
149960,0migration/08591-21kthreadcore00:01:020
149960,0migration/05382-21pmu-power22:06:070
149960,0migration/02212-21taskset22:42:270
8305050,0irq/26-0000:00:0-21swapper/220:30:442
339950,0migration/39462-21kthreadcore23:06:033
339950,0migration/328176-21kthreadcore20:41:023
339950,0migration/323845-21latency_hist00:30:453
339950,0migration/323534-21munin-node20:15:583
339950,0migration/322686-21latency_hist22:00:453
339950,0migration/320980-21kthreadcore22:36:033
339950,0migration/319110-21aten_r1power_fr20:35:553
339950,0migration/317100-21kthreadcore21:16:013
339950,0migration/314559-21timerwakeupswit20:06:093
339950,0migration/313958-21gltestperf00:06:003
339950,0migration/310749-21kthreadcore20:51:013
329950,0watchdog/39475-21sh00:41:003
329950,0watchdog/3908-40yum-updatesd-he22:25:073
329950,0watchdog/321071-21kthreadcore20:11:033
329950,0watchdog/30-21swapper/323:31:043
329950,0watchdog/30-21swapper/319:55:593
29815050,0irq/29-eth0-tx-29052-21ssh00:13:082
29815050,0irq/29-eth0-tx-28971-21munin-node21:01:070
29815050,0irq/29-eth0-tx-15564-21munin-node20:56:060
29815050,0irq/29-eth0-tx-15367-21munin-node20:11:030
29815050,0irq/29-eth0-tx-12368-21sensors_temp23:06:082
29815050,0irq/29-eth0-tx-0-21swapper/222:46:022
29815050,0irq/29-eth0-tx-0-21swapper/222:01:372
29815050,0irq/29-eth0-tx-0-21swapper/200:39:392
29815050,0irq/29-eth0-tx-0-21swapper/200:31:362
29815050,0irq/29-eth0-tx-0-21swapper/021:26:050
29815050,0irq/29-eth0-tx-0-21swapper/020:50:390
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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