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2026-06-28 - 10:50
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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 28, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1838324738,0sleep30-21swapper/319:21:303
2491823525,0sleep10-21swapper/119:21:561
2525523127,0sleep00-21swapper/019:25:520
2490922824,0sleep20-21swapper/219:21:492
339960,0migration/3715-21aten_r1power_vo20:16:273
339960,0migration/329952-21sh21:39:383
339960,0migration/325179-21cpuspeed_turbos21:56:323
339960,0migration/323836-21sh23:07:263
339960,0migration/311613-21sh23:38:463
29815060,0irq/29-eth0-tx-8144-21munin-node21:06:290
29805060,0irq/28-eth0-rx-6381-21sed23:56:193
29805060,0irq/28-eth0-rx-2303-21if_eth122:01:343
253629965,0cyclictest11415-21turbostat.cron20:46:182
253629960,0cyclictest0-21swapper/200:06:482
253609960,0cyclictest0-21swapper/000:46:480
179960,0migration/19121-21if_eth120:21:341
149960,0migration/04239-21sh22:37:490
149960,0migration/04124-21aten_r1power_cu23:36:290
149960,0migration/025671-21kthreadcore20:31:360
4150,0ktimersoftd/00-21swapper/023:54:560
339950,0migration/38970-21aten_r1power_vo00:16:313
339950,0migration/34645-21taskset21:26:253
339950,0migration/33342-21irqrtprio23:16:363
339950,0migration/331949-21missed_timers20:56:383
339950,0migration/331716-21latency_hist22:56:183
339950,0migration/328267-21kthreadcore00:26:393
339950,0migration/327283-21kthreadcore21:16:373
339950,0migration/32694-21kthreadcore22:36:373
339950,0migration/324436-21kthreadcore20:31:353
339950,0migration/323900-21kthreadcore23:26:373
339950,0migration/322601-21kthreadcore22:11:363
339950,0migration/320889-21kthreadcore00:01:383
339950,0migration/320249-21irqrtprio20:51:343
339950,0migration/313203-21idleruntime22:26:333
339950,0migration/311862-21irqcore23:21:353
339950,0migration/311049-21munin-node21:46:353
339950,0migration/31028-21kthreadcore20:36:373
339950,0migration/310221-21latency20:41:363
329950,0watchdog/38564-21diskstats21:06:293
329950,0watchdog/37481-21kthreadcore22:21:373
329950,0watchdog/35457-21tr19:31:373
329950,0watchdog/33335-21perl00:31:343
329950,0watchdog/330757-21rm00:07:263
329950,0watchdog/329246-21ps23:49:343
329950,0watchdog/322402-21munin-node22:31:333
329950,0watchdog/32001-21kthreadcore23:51:383
329950,0watchdog/318190-21perl00:21:343
329950,0watchdog/313981-21perl21:31:333
29815050,0irq/29-eth0-tx-6495-21sensors_volt00:11:412
29815050,0irq/29-eth0-tx-31068-21kthreadcore22:36:362
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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