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2026-08-24 - 07:45
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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 Mon Aug 24, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
738224839,0sleep10-21swapper/119:29:221
751123928,0sleep00-21swapper/019:30:490
712723526,0sleep20-21swapper/219:26:312
748523120,0sleep30-21swapper/319:30:363
329970,0watchdog/34469-21sh23:15:143
75949965,0cyclictest5475-21grep19:51:152
75949960,0cyclictest0-21swapper/200:19:572
75929960,0cyclictest0-21swapper/022:50:540
339960,0migration/37413-21unixbench-2d20:56:243
339960,0migration/34623-21sh00:48:423
339960,0migration/33879-21sh00:31:043
339960,0migration/331572-21sh22:31:223
339960,0migration/320545-21sh23:22:013
329960,0watchdog/316211-21rm23:58:343
329960,0watchdog/310547-21kthreadcore00:51:183
29805060,0irq/28-eth0-rx-31080-21sed21:56:143
179960,0migration/16094-21sh23:34:251
149960,0migration/04172-21sh00:47:210
149960,0migration/021193-21cpuspeed_turbos00:41:120
149960,0migration/020678-21sh00:40:590
149960,0migration/012861-21sh23:19:460
8305050,0irq/26-0000:00:5270-21grep23:16:132
75949955,0cyclictest0-21swapper/222:45:592
75949955,0cyclictest0-21swapper/222:39:032
75949955,0cyclictest0-21swapper/222:10:592
75949955,0cyclictest0-21swapper/221:50:012
75949955,0cyclictest0-21swapper/220:59:532
75949955,0cyclictest0-21swapper/200:53:412
75949955,0cyclictest0-21swapper/200:35:052
75949950,0cyclictest29347-21kthreadcore00:06:162
75949950,0cyclictest0-21swapper/222:57:112
75949950,0cyclictest0-21swapper/222:22:302
75949950,0cyclictest0-21swapper/222:06:252
75949950,0cyclictest0-21swapper/221:26:032
75929950,0cyclictest0-21swapper/000:22:590
4150,0ktimersoftd/00-21swapper/023:54:460
339950,0migration/39572-21kthreadcore19:31:143
339950,0migration/38197-21aten_r1power_cu21:01:093
339950,0migration/36234-21kthreadcore21:41:173
339950,0migration/332739-21taskset00:07:043
339950,0migration/329851-21kthreadcore21:36:173
339950,0migration/329397-21taskset21:13:323
339950,0migration/328628-21timerandwakeup20:26:243
339950,0migration/327130-21aten_r1power_fr22:51:093
339950,0migration/324466-21kthreadcore23:06:183
339950,0migration/321856-21kthreadcore00:01:153
339950,0migration/321508-21pmu-power21:06:193
339950,0migration/319519-21munin-node20:46:123
339950,0migration/318747-21taskset00:36:233
339950,0migration/318714-21taskset21:28:093
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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