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2026-07-03 - 13:32
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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 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2815125039,0sleep10-21swapper/107:25:561
2799923728,0sleep30-21swapper/307:24:143
2795323526,0sleep20-21swapper/207:23:372
2799623430,0sleep00-21swapper/007:24:110
282939999,0cyclictest0-21swapper/009:27:110
282959988,0cyclictest83050irq/26-0000:00:08:41:442
282959988,0cyclictest27946-21sensors08:52:092
339970,0migration/318450-21aten_r1power_en12:01:573
339960,0migration/3913-21sh11:51:473
339960,0migration/38532-21sh10:40:543
339960,0migration/34882-21sh12:30:183
339960,0migration/331506-21latency_hist12:46:463
339960,0migration/321834-21munin-node10:27:093
339960,0migration/320740-21aten_r1power_en12:21:593
339960,0migration/31252-21sh10:53:383
29815060,0irq/29-eth0-tx-11441-21cut11:37:032
29805060,0irq/28-eth0-rx-8361-21cpuspeed_turbos12:51:583
29805060,0irq/28-eth0-rx-18418-21ssh11:02:553
282959960,0cyclictest0-21swapper/211:16:462
149960,0migration/07755-21sh12:51:380
149960,0migration/026783-21latency_hist12:06:460
8305050,0irq/26-0000:00:3222-17sedispatch09:41:452
8305050,0irq/26-0000:00:1643-21interrupts10:37:022
4150,0ktimersoftd/00-21swapper/010:38:360
339950,0migration/38113-21kthreadcore12:32:043
339950,0migration/37799-21kthreadcore07:32:033
339950,0migration/37283-21aten_r1power_po07:56:563
339950,0migration/34764-21cpuspeed_turbos10:01:583
339950,0migration/34250-21idleruntime-cro10:01:453
339950,0migration/33801-21taskset11:14:033
339950,0migration/33699-21kthreadcore09:42:023
339950,0migration/329609-21kthreadcore09:37:043
339950,0migration/327842-21kthreadcore11:47:043
339950,0migration/32616-21kthreadcore12:47:033
339950,0migration/326085-21idleruntime07:46:593
339950,0migration/323135-21kthreadcore08:07:033
339950,0migration/322996-21kthreadcore11:07:033
339950,0migration/319975-21kthreadcore09:12:043
339950,0migration/318314-21kthreadcore12:37:043
339950,0migration/317656-21ksmtuned12:00:313
339950,0migration/317349-21taskset07:38:393
329950,0watchdog/39986-21kthreadcore08:42:043
329950,0watchdog/327164-21kthreadcore11:27:043
329950,0watchdog/314236-21diskstats11:22:003
329950,0watchdog/313600-21tail09:27:043
329950,0watchdog/313071-21kthreadcore09:47:043
29815050,0irq/29-eth0-tx-8681-21kthreadcore10:22:032
29815050,0irq/29-eth0-tx-30488-21munin-node10:16:582
29815050,0irq/29-eth0-tx-28759-21munin-node08:12:020
29815050,0irq/29-eth0-tx-26441-21chrt09:53:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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