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2026-07-24 - 15:27
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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 Fri Jul 24, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
696424736,0sleep20-21swapper/207:25:552
700323929,0sleep30-21swapper/307:26:203
713523736,0sleep00-21swapper/007:27:530
698623127,0sleep10-21swapper/107:26:061
72659960,0cyclictest0-21swapper/212:51:082
72649965,0cyclictest4981-21crond12:48:281
339960,0migration/328377-21sh09:49:503
339960,0migration/323920-21sh10:25:463
339960,0migration/323026-21gltestperf08:23:423
339960,0migration/321396-21sh11:22:423
339960,0migration/317989-21sh12:16:523
339960,0migration/311411-21sh12:32:243
339960,0migration/310317-21timerandwakeup07:48:553
329960,0watchdog/329985-21sed07:43:433
329960,0watchdog/30-21swapper/311:06:273
29805060,0irq/28-eth0-rx-1552-21cut11:08:483
29805060,0irq/28-eth0-rx-0-21swapper/311:56:073
29805060,0irq/28-eth0-rx-0-21swapper/310:54:123
149960,0migration/02908-21ntp_offset08:28:490
149960,0migration/028029-21sh12:41:070
149960,0migration/026908-21sh09:33:130
149960,0migration/026004-21sh12:20:230
149960,0migration/021563-21kthreadcore08:43:460
8305050,0irq/26-0000:00:21897-21munin-run08:23:272
8305050,0irq/26-0000:00:18170-21crond07:58:272
72659955,0cyclictest0-21swapper/211:17:002
72659950,0cyclictest0-21swapper/210:32:332
72659950,0cyclictest0-21swapper/207:59:562
72639955,0cyclictest0-21swapper/012:48:500
72639955,0cyclictest0-21swapper/011:56:580
72639955,0cyclictest0-21swapper/011:03:410
72639950,0cyclictest0-21swapper/011:29:030
72639950,0cyclictest0-21swapper/010:35:460
72639950,0cyclictest0-21swapper/010:19:130
72639950,0cyclictest0-21swapper/008:48:430
4150,0ktimersoftd/00-21swapper/009:50:410
339950,0migration/3941-21munin-node11:48:443
339950,0migration/38622-21fschecks_count10:18:423
339950,0migration/38313-21kthreadcore09:58:473
339950,0migration/36742-21kthreadcore09:18:453
339950,0migration/328452-21kthreadcore10:08:473
339950,0migration/328382-21kthreadcore10:28:463
339950,0migration/325586-21latency_hist08:03:273
339950,0migration/324430-21sh07:58:503
339950,0migration/322041-21taskset09:07:513
339950,0migration/321777-21kthreadcore10:43:463
339950,0migration/319745-21kthreadcore07:33:493
339950,0migration/319596-21idleruntime08:43:443
339950,0migration/316387-21munin-node11:38:453
339950,0migration/315750-21kthreadcore12:33:463
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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