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2026-03-26 - 11:17
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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 Mar 26, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2263024233,0sleep20-21swapper/219:14:532
2289024129,0sleep10-21swapper/119:17:561
2262623728,0sleep30-21swapper/319:14:503
2270723329,0sleep00-21swapper/019:15:470
8305070,0irq/26-0000:00:3207-17auditd19:28:343
35160,0ktimersoftd/30-21swapper/321:08:543
339960,0migration/38504-21sh00:44:143
339960,0migration/34602-21taskset00:05:393
339960,0migration/330426-21munin-node22:48:553
339960,0migration/317419-21fschecks_time00:33:493
339960,0migration/312760-21sh00:09:163
339960,0migration/312535-21sh21:40:363
339960,0migration/310696-21sh22:35:563
29815060,0irq/29-eth0-tx-1698-21munin-node19:48:550
29815060,0irq/29-eth0-tx-16213-21munin-node19:58:520
29805060,0irq/28-eth0-rx-3016-21perl21:18:473
230249960,0cyclictest0-21swapper/222:14:002
230249960,0cyclictest0-21swapper/221:51:372
230219966,0cyclictest31448-21sensors23:23:561
179960,0migration/111959-21unixbench-2d20:13:591
149960,0migration/032320-21sh23:25:200
149960,0migration/027627-21sh22:44:550
149960,0migration/02047-21kthreadcore21:53:510
149960,0migration/012322-21kthreadcore22:18:520
149960,0migration/012322-21kthreadcore22:18:520
339950,0migration/36747-21kthreadcore22:13:523
339950,0migration/34163-21kthreadcore20:33:523
339950,0migration/332710-21taskset22:12:303
339950,0migration/329614-21switchtime00:19:003
339950,0migration/326417-21munin-node00:38:513
339950,0migration/324793-21kthreadcore19:38:523
339950,0migration/323669-21kthreadcore23:38:533
339950,0migration/321583-21kthreadcore20:43:523
339950,0migration/320977-21taskset23:58:433
339950,0migration/31770-21taskset23:44:163
339950,0migration/317140-21kthreadcore21:03:533
339950,0migration/316952-21sh23:34:153
339950,0migration/315572-21munin-node20:39:003
329950,0watchdog/3706-21grep22:28:543
329950,0watchdog/36314-21runrttasks22:56:583
329950,0watchdog/332381-21kthreadcore20:53:493
329950,0watchdog/320085-21cpuspeed_turbos21:28:463
29815050,0irq/29-eth0-tx-1596-21munin-node00:43:562
29815050,0irq/29-eth0-tx-1556-40yum-updatesd-he21:14:300
29815050,0irq/29-eth0-tx-0-21swapper/221:44:162
29815050,0irq/29-eth0-tx-0-21swapper/021:08:540
29815050,0irq/29-eth0-tx-0-21swapper/019:47:240
29815050,0irq/29-eth0-tx-0-21swapper/019:38:500
29805050,0irq/28-eth0-rx-4717-21kthreadcore00:23:543
29805050,0irq/28-eth0-rx-28823-21kthreadcore23:23:523
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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