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2026-06-15 - 19:11
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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 Jun 15, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1477923829,0sleep20-21swapper/207:24:242
1470723829,0sleep10-21swapper/107:23:351
1462723228,0sleep30-21swapper/307:22:413
795723026,0sleep00-21swapper/007:20:220
14931991919,0cyclictest0-21swapper/209:27:352
339960,0migration/35276-21munin-node10:35:323
339960,0migration/33264-21sh10:32:253
339960,0migration/329830-21sh10:49:093
339960,0migration/325693-21sh10:24:173
339960,0migration/323040-21sh12:18:533
329960,0watchdog/320857-21sh11:58:493
29805060,0irq/28-eth0-rx-1170-21ssh11:27:493
259960,0migration/215929-21sh10:15:552
149279965,0cyclictest18465-21expr11:20:310
149960,0migration/09174-21hwlatdetect08:05:320
149960,0migration/06605-21aten_r1power_fr12:10:290
149960,0migration/027171-21idleruntime11:25:320
149960,0migration/026046-21sh09:54:090
149960,0migration/025344-21sh10:23:180
149960,0migration/022916-21sh09:46:180
149960,0migration/020081-21idleruntime08:35:320
149960,0migration/013061-21sh11:55:220
149960,0migration/010359-21sh09:33:010
8305050,0irq/26-0000:00:25396-21head09:20:382
8305050,0irq/26-0000:00:15674-21dump-pmu-power09:45:182
8305050,0irq/26-0000:00:0-21swapper/210:20:182
339950,0migration/37978-21kthreadcore11:30:363
339950,0migration/37372-21kthreadcore08:25:333
339950,0migration/35895-21irqcore11:50:363
339950,0migration/35081-21kthreadcore09:30:343
339950,0migration/332420-21kthreadcore09:25:353
339950,0migration/33028-21kthreadcore08:45:363
339950,0migration/328999-21taskset07:31:183
339950,0migration/325372-21irqcore11:05:343
339950,0migration/322955-21taskset11:03:073
339950,0migration/321779-21smart_sdb08:55:413
339950,0migration/319568-21kthreadcore11:20:353
339950,0migration/317119-21taskset11:35:373
339950,0migration/316886-21runrttasks10:18:373
339950,0migration/316590-21kthreadcore08:30:353
339950,0migration/315778-21taskset07:25:303
339950,0migration/311448-21kthreadcore12:10:363
339950,0migration/311008-21kthreadcore11:15:363
339950,0migration/310153-21kthreadcore07:40:363
329950,0watchdog/36314-21runrttasks08:13:123
329950,0watchdog/34950-21sshd12:06:413
329950,0watchdog/326593-21ssh10:26:093
329950,0watchdog/313863-21kthreadcore09:15:363
329950,0watchdog/30-21swapper/311:40:373
329950,0watchdog/30-21swapper/307:55:323
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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