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2026-07-03 - 03:19
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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 Fri Jul 03, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1734224433,0sleep20-21swapper/219:23:272
1750323625,0sleep30-21swapper/319:25:203
1735623524,0sleep10-21swapper/119:23:381
1727323228,0sleep00-21swapper/019:22:410
176929970,0cyclictest2896-21kthreadcore23:02:012
339960,0migration/332338-21sh23:01:143
339960,0migration/329110-21sh00:51:473
339960,0migration/32209-21sh23:21:193
339960,0migration/318830-21sh00:42:553
339960,0migration/31643-21irqcore23:02:013
339960,0migration/314812-21sh00:04:233
339960,0migration/312150-21sh23:43:183
339960,0migration/310578-21latency22:27:003
29815060,0irq/29-eth0-tx-3591-21munin-node20:02:040
29815060,0irq/29-eth0-tx-21549-21munin-node19:52:040
29805060,0irq/28-eth0-rx-30776-21irqrtprio21:26:593
29805060,0irq/28-eth0-rx-28003-21python20:37:063
29805060,0irq/28-eth0-rx-17714-21kthreadcore20:31:583
29805060,0irq/28-eth0-rx-16727-21cut20:52:013
259960,0migration/23688-21sh00:52:412
176929960,0cyclictest0-21swapper/223:49:382
176899960,0cyclictest0-21swapper/022:55:210
149960,0migration/09702-21sh22:08:540
149960,0migration/032254-21idleruntime-cro20:21:420
149960,0migration/031239-21sh22:58:100
149960,0migration/023092-21if_eth1.322:37:000
149960,0migration/017187-21sh00:24:460
149960,0migration/010910-21sh23:26:090
8305050,0irq/26-0000:00:3714-21date20:46:432
4150,0ktimersoftd/00-21swapper/023:43:480
339950,0migration/38503-21kernelversion22:47:003
339950,0migration/3845-21kthreadcore23:57:003
339950,0migration/35008-21kthreadcore23:21:593
339950,0migration/328950-21kthreadcore19:32:003
339950,0migration/326539-21taskset22:17:393
339950,0migration/326251-21kthreadcore00:12:013
339950,0migration/323761-21sh23:52:003
339950,0migration/322872-21kthreadcore23:32:023
339950,0migration/322724-21fschecks_time22:36:573
339950,0migration/31828-21munin-node22:22:013
339950,0migration/31788-21kthreadcore22:42:013
339950,0migration/316998-21kthreadcore21:17:013
339950,0migration/312367-21kthreadcore21:12:013
339950,0migration/312256-21kthreadcore00:22:013
339950,0migration/311676-21kthreadcore19:41:593
339950,0migration/310882-21kthreadcore21:52:033
329950,0watchdog/36314-21runrttasks20:47:053
329950,0watchdog/36314-21runrttasks19:50:333
329950,0watchdog/36146-21python19:37:053
329950,0watchdog/332023-21ps20:19:173
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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