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2026-05-09 - 12:43
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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 Sat May 09, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2905726160,0sleep00-21swapper/019:20:310
2845924140,0sleep10-21swapper/119:17:361
2909223627,0sleep30-21swapper/319:20:543
2888223127,0sleep20-21swapper/219:18:292
8305070,0irq/26-0000:00:22898-21sa123:22:132
8305070,0irq/26-0000:00:22508-21munin-run22:07:122
339960,0migration/39347-21sh23:49:533
339960,0migration/3742-21kthreadcore22:12:303
339960,0migration/331084-21sh22:12:063
339960,0migration/329175-21kthreadcore21:32:283
339960,0migration/328078-21sh21:49:563
339960,0migration/321937-21runrttasks00:33:293
339960,0migration/320123-21idleruntime23:57:283
339960,0migration/318656-21munin-node21:27:293
339960,0migration/318201-21sh22:41:363
339960,0migration/318182-21irqrtprio23:37:293
339960,0migration/31395-21dump-pmu-power23:47:133
29815060,0irq/29-eth0-tx-0-21swapper/020:47:300
292749966,0cyclictest0-21swapper/222:07:252
292729965,0cyclictest0-21swapper/000:03:140
27160,0ktimersoftd/20-21swapper/200:13:332
149960,0migration/027250-21sh00:01:460
149960,0migration/02594-21latency_hist21:37:120
149960,0migration/023504-21sh00:37:160
149960,0migration/011615-21sh22:56:020
8305050,0irq/26-0000:00:0-21swapper/319:42:383
339950,0migration/38362-21kthreadcore20:12:303
339950,0migration/38163-21aten_r1power_cu19:52:233
339950,0migration/3389-21kthreadcore22:47:313
339950,0migration/331185-21kthreadcore19:22:293
339950,0migration/330869-21kthreadcore21:12:313
339950,0migration/329982-21kthreadcore00:02:313
339950,0migration/326798-21kthreadcore22:27:293
339950,0migration/326285-21kthreadcore00:17:313
339950,0migration/324478-21gltestperf00:37:263
339950,0migration/321922-21runrttasks22:05:413
339950,0migration/319752-21munin-node21:07:263
339950,0migration/319139-21switchtime00:12:383
339950,0migration/318341-21kthreadcore19:57:313
339950,0migration/314914-21kthreadcore19:32:303
339950,0migration/313107-21irqcore20:17:293
339950,0migration/31263-21kthreadcore23:27:293
339950,0migration/312199-21aten_r1power_fr21:02:233
339950,0migration/31095-21aten_r1power_cu20:32:243
329950,0watchdog/32846-21telnet21:37:243
329950,0watchdog/328421-21memory20:02:313
329950,0watchdog/312482-21ssh21:58:283
29815050,0irq/29-eth0-tx-8122-21munin-node23:32:242
29815050,0irq/29-eth0-tx-29951-21tr21:32:282
29815050,0irq/29-eth0-tx-28451-21ssh23:04:552
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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