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2026-05-31 - 09:54
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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 Sun May 31, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1276524634,0sleep20-21swapper/219:22:062
1282023827,0sleep00-21swapper/019:22:400
575923324,0sleep10-21swapper/119:19:011
599423026,0sleep30-21swapper/319:19:113
29805070,0irq/28-eth0-rx-27938-21kthreadcore22:39:193
130059970,0cyclictest0-21swapper/223:19:192
339960,0migration/39389-21cpuspeed_turbos23:44:133
339960,0migration/35789-21sh23:22:103
339960,0migration/35344-21gltestperf23:04:143
339960,0migration/320148-21kthreadcore21:19:183
339960,0migration/320148-21kthreadcore21:19:183
339960,0migration/31148-21sh23:55:333
339960,0migration/310985-21sh00:03:293
29815060,0irq/29-eth0-tx-31530-21munin-node20:44:200
29815060,0irq/29-eth0-tx-20661-21munin-node20:14:230
29805060,0irq/28-eth0-rx-30206-21yum22:19:263
29805060,0irq/28-eth0-rx-23957-21cut21:59:203
29805060,0irq/28-eth0-rx-21545-21taskset00:27:173
29805060,0irq/28-eth0-rx-16821-21sh21:35:153
149960,0migration/06754-21sh23:24:110
149960,0migration/031640-21kthreadcore22:59:200
149960,0migration/026426-21kthreadcore19:54:180
149960,0migration/025346-21kthreadcore23:14:200
149960,0migration/021783-21taskset20:59:160
130059960,0cyclictest0-21swapper/200:39:442
130039960,0cyclictest0-21swapper/000:32:150
8305050,0irq/26-0000:00:27354-21ls19:34:013
8305050,0irq/26-0000:00:2462-21munin-run23:59:012
8305050,0irq/26-0000:00:0-21swapper/221:34:022
339950,0migration/38362-21kthreadcore21:09:203
339950,0migration/37958-21kthreadcore19:39:183
339950,0migration/35587-21taskset19:59:473
339950,0migration/33517-21kthreadcore21:29:223
339950,0migration/332282-21if_eth1.200:34:173
339950,0migration/331059-21munin-node00:49:243
339950,0migration/328681-21kthreadcore21:24:203
339950,0migration/327619-21taskset21:02:203
339950,0migration/325789-21munin-node22:54:233
339950,0migration/32382-21taskset21:07:123
339950,0migration/323614-21taskset19:50:453
339950,0migration/320748-21kthreadcore22:34:203
339950,0migration/317877-21sh22:50:173
339950,0migration/317841-21fschecks_time20:34:143
339950,0migration/316628-21taskset19:48:133
339950,0migration/315468-21kthreadcore20:54:183
339950,0migration/314005-21taskset22:12:303
339950,0migration/310833-21kthreadcore22:29:183
329950,0watchdog/33524-21snmpd19:34:123
329950,0watchdog/327031-21kthreadcore23:14:203
329950,0watchdog/323455-21munin-node00:29:173
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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