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2026-08-30 - 02:55
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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 Aug 30, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2142624027,0sleep30-21swapper/319:28:513
2138623925,0sleep00-21swapper/019:28:200
1474323626,0sleep10-21swapper/119:26:361
2148323127,0sleep20-21swapper/219:29:302
339960,0migration/33383-21sh22:08:343
339960,0migration/332089-21sh00:19:563
339960,0migration/310622-21cpuspeed_turbos23:11:413
29805060,0irq/28-eth0-rx-9944-21swap23:26:533
29805060,0irq/28-eth0-rx-27873-21munin-node19:31:463
29805060,0irq/28-eth0-rx-14992-21cut00:46:473
217399960,0cyclictest0-21swapper/223:50:552
217329960,0cyclictest0-21swapper/123:30:511
217249963,0cyclictest30042-21kworker/0:123:26:450
19160,0ktimersoftd/10-21swapper/120:01:441
149960,0migration/07365-21munin-run20:51:270
149960,0migration/031714-21munin-node19:56:480
149960,0migration/02524-21munin-node00:41:400
149960,0migration/024961-21kthreadcore19:31:450
339950,0migration/38239-21fschecks_count20:06:413
339950,0migration/3448-21munin-node00:21:413
339950,0migration/34019-21aten_r1power_en19:41:383
339950,0migration/332709-21kthreadcore20:21:443
339950,0migration/332066-21munin-node00:01:433
339950,0migration/331006-21kthreadcore23:41:463
339950,0migration/327779-21kthreadcore20:16:463
339950,0migration/327444-21kthreadcore23:01:473
339950,0migration/327002-21taskset00:53:563
339950,0migration/325018-21pmu-power23:16:503
339950,0migration/324907-21switchtime20:36:523
339950,0migration/323317-21taskset00:14:103
339950,0migration/321630-21kthreadcore21:41:473
339950,0migration/321155-21sh20:11:513
339950,0migration/320168-21kthreadcore00:31:443
339950,0migration/312806-21irqrtprio21:16:433
329950,0watchdog/38955-21kthreadcore23:46:473
329950,0watchdog/35660-21cut21:31:473
329950,0watchdog/35085-21sed21:11:433
329950,0watchdog/329801-21kthreadcore00:36:473
329950,0watchdog/326922-21sh22:02:393
329950,0watchdog/325800-21kthreadcore22:21:473
329950,0watchdog/320232-21grep22:36:473
329950,0watchdog/318599-21cut22:16:473
329950,0watchdog/312450-21kthreadcore00:06:473
329950,0watchdog/30-21swapper/323:51:393
329950,0watchdog/30-21swapper/300:26:313
29815050,0irq/29-eth0-tx-4249-21munin-node20:26:490
29815050,0irq/29-eth0-tx-4085-21ssh23:43:312
29815050,0irq/29-eth0-tx-3550-21munin-node23:26:502
29815050,0irq/29-eth0-tx-28944-21cut00:16:482
29815050,0irq/29-eth0-tx-26799-21iostat_ios23:01:462
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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