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2026-04-22 - 09:23
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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 100 highest latencies:
System rack1slot2.osadl.org (updated Wed Apr 22, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
751424535,0sleep30-21swapper/319:18:163
769723627,0sleep10-21swapper/119:20:261
743823622,0sleep00-21swapper/019:17:250
750723324,0sleep20-21swapper/219:18:112
78069960,0cyclictest0-21swapper/221:43:102
78029960,0cyclictest0-21swapper/121:41:141
339960,0migration/39184-21sh00:38:423
339960,0migration/33867-21sh21:29:263
339960,0migration/3348-21sh00:33:443
339960,0migration/33173-21idleruntime-cro23:40:493
339960,0migration/329812-21sh21:43:163
339960,0migration/327465-21munin-node23:51:173
339960,0migration/326040-21runrttasks23:33:283
339960,0migration/321143-21sh21:38:213
339960,0migration/318039-21sh23:30:183
29805060,0irq/28-eth0-rx-8854-21perl19:21:013
29805060,0irq/28-eth0-rx-22198-21grep00:26:073
29805060,0irq/28-eth0-rx-15944-21fschecks_time19:26:023
29805060,0irq/28-eth0-rx-10570-21ssh22:27:593
149960,0migration/07488-21aten_r1power_fr21:51:000
149960,0migration/07488-21aten_r1power_fr21:51:000
149960,0migration/031525-21sendmail_mailst00:31:110
149960,0migration/010490-21sh23:42:070
8305050,0irq/26-0000:00:8273-21crond20:50:482
8305050,0irq/26-0000:00:8171-21wc20:05:482
78069950,0cyclictest9874-21munin-node23:26:092
78069950,0cyclictest0-21swapper/223:08:472
78069950,0cyclictest0-21swapper/221:59:342
78069950,0cyclictest0-21swapper/200:34:052
78029950,0cyclictest0-21swapper/100:11:191
78019950,0cyclictest0-21swapper/022:44:450
78019950,0cyclictest0-21swapper/000:09:160
339950,0migration/37303-21latency_hist21:50:493
339950,0migration/37303-21latency_hist21:50:493
339950,0migration/36701-21sh23:04:043
339950,0migration/35709-21munin-node19:41:053
339950,0migration/331098-21runrttasks00:15:133
339950,0migration/328402-21taskset19:31:073
339950,0migration/327794-21taskset21:25:473
339950,0migration/32598-21kthreadcore21:06:073
339950,0migration/323649-21kthreadcore22:36:073
339950,0migration/323539-21fschecks_time22:56:033
339950,0migration/318792-21sh00:45:493
339950,0migration/316942-21fschecks_time23:11:023
339950,0migration/316375-21fschecks_time20:56:023
339950,0migration/315337-21kthreadcore23:46:073
339950,0migration/313286-21munin-node19:46:063
329950,0watchdog/37181-21memory23:21:083
329950,0watchdog/332191-21ssh22:03:363
329950,0watchdog/325225-21taskset22:17:003
329950,0watchdog/315233-21kthreadcore20:31:073
329950,0watchdog/30-21swapper/323:06:083
29815050,0irq/29-eth0-tx-3521-21ssh22:41:322
29815050,0irq/29-eth0-tx-32508-21iostat23:01:032
29815050,0irq/29-eth0-tx-19534-21ssh21:21:020
29815050,0irq/29-eth0-tx-18912-21munin-node19:51:020
29815050,0irq/29-eth0-tx-16808-21unixbench_multi00:41:142
29815050,0irq/29-eth0-tx-12201-21munin-node21:16:090
29815050,0irq/29-eth0-tx-0-21swapper/222:16:082
29815050,0irq/29-eth0-tx-0-21swapper/200:36:072
29815050,0irq/29-eth0-tx-0-21swapper/021:06:140
29815050,0irq/29-eth0-tx-0-21swapper/020:35:530
29805050,0irq/28-eth0-rx-8764-21fschecks_time00:21:033
29805050,0irq/28-eth0-rx-832-21ssh22:05:583
29805050,0irq/28-eth0-rx-31427-21kthreadcore20:21:063
29805050,0irq/28-eth0-rx-31210-21cut21:46:023
29805050,0irq/28-eth0-rx-29632-21kthreadcore20:41:063
29805050,0irq/28-eth0-rx-24837-21kthreadcore20:36:083
29805050,0irq/28-eth0-rx-23045-21tr19:51:063
29805050,0irq/28-eth0-rx-21018-21ssh22:51:563
29805050,0irq/28-eth0-rx-14670-21df00:06:003
29805050,0irq/28-eth0-rx-13187-21kthreadcore22:11:073
29805050,0irq/28-eth0-rx-0-21swapper/323:56:063
29805050,0irq/28-eth0-rx-0-21swapper/323:15:503
29805050,0irq/28-eth0-rx-0-21swapper/322:46:053
29805050,0irq/28-eth0-rx-0-21swapper/322:32:523
29805050,0irq/28-eth0-rx-0-21swapper/321:31:013
29805050,0irq/28-eth0-rx-0-21swapper/300:16:083
249950,0watchdog/225681-21fschecks_time23:16:042
249950,0watchdog/21171-21kthreadcore21:06:072
179950,0migration/19157-21fschecks_time20:06:021
179950,0migration/15818-21munin-node20:26:041
179950,0migration/14836-21latency_hist21:10:491
179950,0migration/128169-21irqcore22:21:051
179950,0migration/126863-21fschecks_count20:41:021
179950,0migration/122056-21crond21:40:491
179950,0migration/121374-21sh22:52:551
179950,0migration/118940-21aten2.4-expect19:50:591
179950,0migration/116859-21fschecks_time21:56:031
179950,0migration/116371-21gltestperf20:11:031
179950,0migration/11015-21sh00:35:251
169950,0watchdog/127226-21if_eth119:56:031
149950,0migration/09887-21kthreadcore22:46:070
149950,0migration/08920-21kthreadcore00:01:060
149950,0migration/08886-21taskset00:37:540
149950,0migration/08131-21fschecks_count23:06:030
149950,0migration/07984-21taskset20:05:260
149950,0migration/07953-21sh22:06:550
149950,0migration/07694-21timerandwakeup23:21:140
149950,0migration/07366-21kthreadcore21:31:070
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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