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2026-08-06 - 23:46
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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 Thu Aug 06, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
194423627,0sleep20-21swapper/207:28:232
173823626,0sleep10-21swapper/107:25:571
202423430,0sleep30-21swapper/307:29:163
192723228,0sleep00-21swapper/007:28:130
21229976,0cyclictest0-21swapper/210:49:502
21209970,0cyclictest0-21swapper/009:59:490
35160,0ktimersoftd/30-21swapper/309:32:403
339960,0migration/332572-21kthreadcore09:39:503
339960,0migration/327778-21sh10:33:543
339960,0migration/32662-21kthreadcore09:59:493
339960,0migration/323402-21sh09:52:083
339960,0migration/319242-21sh10:28:593
339960,0migration/310205-21sh11:55:383
29815060,0irq/29-eth0-tx-16864-21cpu11:24:442
29805060,0irq/28-eth0-rx-23155-21tr10:49:503
29805060,0irq/28-eth0-rx-18969-21memory10:44:523
29805060,0irq/28-eth0-rx-14682-21iostat_ios08:44:473
29805060,0irq/28-eth0-rx-14542-21grep12:19:473
27160,0ktimersoftd/20-21swapper/210:39:432
259960,0migration/225153-21kthreadcore09:34:472
21229966,0cyclictest0-21swapper/210:44:482
21229960,0cyclictest0-21swapper/212:26:382
21229960,0cyclictest0-21swapper/210:09:572
21229960,0cyclictest0-21swapper/209:54:582
21209965,0cyclictest0-21swapper/010:52:480
21209963,0cyclictest2209-21kworker/0:212:04:580
19160,0ktimersoftd/10-21swapper/110:39:431
149960,0migration/032424-21sh11:31:340
149960,0migration/031072-21sh12:45:570
149960,0migration/026779-21sh10:30:570
149960,0migration/025021-21kthreadcore12:24:510
149960,0migration/02272-21sh11:52:380
149960,0migration/017966-21kthreadcore12:39:490
149960,0migration/015480-21sh09:49:110
4150,0ktimersoftd/00-21swapper/012:15:250
339950,0migration/39644-21kthreadcore10:59:503
339950,0migration/35512-21df_abs12:14:463
339950,0migration/35199-21kthreadcore11:34:513
339950,0migration/34583-21taskset12:29:543
339950,0migration/34334-21kthreadcore10:19:503
339950,0migration/332415-21munin-node10:14:533
339950,0migration/331794-21sh09:56:433
339950,0migration/329413-21kthreadcore12:44:513
339950,0migration/32804-21fschecks_count07:29:443
339950,0migration/325012-21fschecks_time09:14:443
339950,0migration/323857-21kthreadcore08:04:493
339950,0migration/321625-21kthreadcore10:09:483
339950,0migration/31550-21munin-node08:54:543
339950,0migration/315190-21kthreadcore07:59:493
339950,0migration/313768-21kthreadcore11:39:513
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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