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2026-08-29 - 20:46
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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 Sat Aug 29, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2706824536,0sleep10-21swapper/107:28:241
2730023928,0sleep30-21swapper/307:31:063
2719323525,0sleep20-21swapper/207:29:492
2711523120,0sleep00-21swapper/007:28:550
273989999,0cyclictest6613-21sensors11:21:492
273989970,0cyclictest28129-21grep08:36:422
8305060,0irq/26-0000:00:2939-21grep08:41:443
8305060,0irq/26-0000:00:23526-21sh09:21:253
8305060,0irq/26-0000:00:10105-21if_eth1.307:41:433
35160,0ktimersoftd/30-21swapper/311:53:583
339960,0migration/330185-21sh12:33:363
339960,0migration/329095-21sh10:57:213
339960,0migration/312353-21munin-node09:31:513
29805060,0irq/28-eth0-rx-8567-21chrt12:59:253
29805060,0irq/28-eth0-rx-24989-21irqrtprio08:36:413
29805060,0irq/28-eth0-rx-24300-21iostat_ios09:41:413
29805060,0irq/28-eth0-rx-0-21swapper/311:06:433
273989960,0cyclictest0-21swapper/212:42:582
273989960,0cyclictest0-21swapper/212:36:492
273979965,0cyclictest0-21swapper/109:36:241
273969963,0cyclictest15359-21kworker/0:112:36:490
27160,0ktimersoftd/20-21swapper/211:53:582
19160,0ktimersoftd/10-21swapper/111:53:581
149960,0migration/028241-21sh12:13:210
149960,0migration/025731-21hwlatdetect12:51:420
149960,0migration/024212-21sh12:50:460
149960,0migration/022751-21timerwakeupswit08:31:500
8305050,0irq/26-0000:00:6431-21kthreadcore11:41:442
4150,0ktimersoftd/00-21swapper/010:45:260
35150,0ktimersoftd/30-21swapper/311:03:213
339950,0migration/39233-21munin-node08:26:383
339950,0migration/38692-21munin-node09:06:543
339950,0migration/38345-21kthreadcore08:46:453
339950,0migration/36789-21kthreadcore10:26:463
339950,0migration/35578-21pmu-power09:46:463
339950,0migration/330655-21kthreadcore10:41:443
339950,0migration/330292-21kthreadcore10:21:443
339950,0migration/328586-21irqcore09:01:433
339950,0migration/328564-21kthreadcore11:16:443
339950,0migration/327864-21kthreadcore07:51:433
339950,0migration/321811-21fschecks_time12:11:403
339950,0migration/319903-21kthreadcore08:31:433
339950,0migration/319885-21latency_hist08:56:253
339950,0migration/319266-21sh10:33:593
339950,0migration/318608-21sh11:50:313
339950,0migration/316809-21aten_r1power_vo09:56:383
339950,0migration/314311-21runrttasks12:26:263
339950,0migration/312190-21taskset08:04:403
339950,0migration/311746-21kthreadcore11:26:433
329950,0watchdog/323072-21kthreadcore10:36:453
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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