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2026-08-28 - 07:55
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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 Fri Aug 28, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
759123626,0sleep20-21swapper/219:27:122
782823228,0sleep30-21swapper/319:30:023
761723019,0sleep00-21swapper/019:27:300
780122925,0sleep10-21swapper/119:29:401
8013992020,0cyclictest3524-21snmpd21:21:261
8012991212,0cyclictest3858-21sensors20:31:390
339960,0migration/36389-21sh23:34:103
339960,0migration/35188-21sh23:16:153
339960,0migration/329795-21sh00:45:553
339960,0migration/322628-21sh00:59:363
339960,0migration/322275-21sh22:07:433
339960,0migration/318563-21irqrtprio22:26:383
29815060,0irq/29-eth0-tx-19299-21munin-node20:46:330
29805060,0irq/28-eth0-rx-4645-21dump-pmu-power20:36:173
29805060,0irq/28-eth0-rx-30474-21cut00:26:363
29805060,0irq/28-eth0-rx-20944-21if_eth1.200:21:373
149960,0migration/028255-21sh00:26:200
149960,0migration/023096-21sh23:43:040
149960,0migration/010033-21sh22:41:120
8305050,0irq/26-0000:00:8165-21python22:36:422
8305050,0irq/26-0000:00:20633-21perl00:21:332
80149955,0cyclictest0-21swapper/220:51:182
80139955,0cyclictest0-21swapper/122:51:371
80139955,0cyclictest0-21swapper/122:15:221
80139954,0cyclictest3524-21snmpd23:46:341
80139950,0cyclictest0-21swapper/123:45:141
80139950,0cyclictest0-21swapper/123:21:541
80139950,0cyclictest0-21swapper/122:02:171
80129955,0cyclictest0-21swapper/022:27:560
80129955,0cyclictest0-21swapper/019:36:330
80129955,0cyclictest0-21swapper/019:36:330
80129955,0cyclictest0-21swapper/000:14:590
4150,0ktimersoftd/00-21swapper/000:33:350
339950,0migration/36274-21fschecks_time23:16:323
339950,0migration/35781-21taskset21:59:273
339950,0migration/35567-21idleruntime00:31:343
339950,0migration/332710-21timerwakeupswit20:06:423
339950,0migration/331829-21kthreadcore00:46:363
339950,0migration/33021-21kthreadcore20:11:343
339950,0migration/329733-21missed_timers22:11:383
339950,0migration/329206-21taskset19:42:323
339950,0migration/328891-21kthreadcore20:51:363
339950,0migration/328543-21munin-node21:36:333
339950,0migration/325844-21munin-node21:31:433
339950,0migration/32068-21taskset22:52:413
339950,0migration/317319-21diskmemload22:42:313
339950,0migration/316554-21kthreadcore21:26:373
339950,0migration/316267-21fschecks_time20:21:313
339950,0migration/315814-21aten_r1power_en21:06:303
339950,0migration/315560-21irqrtprio23:21:363
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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