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2026-05-02 - 06:14
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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 Sat May 02, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2323723928,0sleep20-21swapper/219:20:152
2300323525,0sleep10-21swapper/119:17:341
2330223430,0sleep30-21swapper/319:21:043
2302023228,0sleep00-21swapper/019:17:450
8305060,0irq/26-0000:00:3206-17auditd22:01:382
35160,0ktimersoftd/30-21swapper/322:40:173
339960,0migration/39493-21latency_hist20:41:383
339960,0migration/38956-21sh22:19:293
339960,0migration/37920-21kthreadcore20:16:553
339960,0migration/331369-21sh23:11:413
339960,0migration/328693-21munin-node21:16:513
339960,0migration/325358-21fschecks_count23:26:523
29815060,0irq/29-eth0-tx-23847-21munin-node20:06:500
29805060,0irq/28-eth0-rx-29778-21diskstats22:51:513
29805060,0irq/28-eth0-rx-22067-21cut22:46:543
29805060,0irq/28-eth0-rx-11803-21python00:12:013
234289966,0cyclictest0-21swapper/200:27:552
234289960,0cyclictest0-21swapper/221:44:062
234269960,0cyclictest0-21swapper/019:51:480
149960,0migration/030958-21sh23:11:090
149960,0migration/021508-21sh23:03:410
149960,0migration/012224-21unixbench-2d19:31:590
35150,0ktimersoftd/30-21swapper/322:07:203
339950,0migration/34002-21kthreadcore00:46:553
339950,0migration/332008-21fschecks_time20:56:523
339950,0migration/33147-21gltestperf19:51:503
339950,0migration/330268-21sendmail_mailst20:52:053
339950,0migration/329833-21kthreadcore20:31:553
339950,0migration/322348-21kthreadcore20:01:563
339950,0migration/318342-21irqrtprio20:46:533
339950,0migration/317941-21missed_timers23:56:583
339950,0migration/311935-21kthreadcore20:41:553
339950,0migration/311445-21irqrtprio22:21:563
339950,0migration/310379-21gltestperf19:56:593
339950,0migration/310033-21cpu23:36:513
329950,0watchdog/37527-21python23:32:023
329950,0watchdog/3600-21ssh23:46:583
329950,0watchdog/327967-21kthreadcore19:21:573
329950,0watchdog/32205-21kthreadcore00:26:583
329950,0watchdog/30-21swapper/323:06:573
29815050,0irq/29-eth0-tx-30784-21munin-node23:26:582
29815050,0irq/29-eth0-tx-28890-21ls21:36:382
29815050,0irq/29-eth0-tx-13404-21munin-node21:06:510
29815050,0irq/29-eth0-tx-0-21swapper/223:56:002
29815050,0irq/29-eth0-tx-0-21swapper/223:40:572
29815050,0irq/29-eth0-tx-0-21swapper/222:18:312
29815050,0irq/29-eth0-tx-0-21swapper/200:06:062
29815050,0irq/29-eth0-tx-0-21swapper/020:01:530
29815050,0irq/29-eth0-tx-0-21swapper/019:37:340
29805050,0irq/28-eth0-rx-7991-21aten_r1power_fr22:01:493
29805050,0irq/28-eth0-rx-5597-21ssh22:56:483
29805050,0irq/28-eth0-rx-5554-21cat21:41:383
29805050,0irq/28-eth0-rx-4253-21munin-node23:51:533
29805050,0irq/28-eth0-rx-31591-21grep00:06:563
29805050,0irq/28-eth0-rx-29177-21unixbench-2d00:22:043
29805050,0irq/28-eth0-rx-21544-21ps21:31:533
29805050,0irq/28-eth0-rx-20955-21diskstats00:01:503
29805050,0irq/28-eth0-rx-20007-21kthreadcore23:41:553
29805050,0irq/28-eth0-rx-16651-21kthreadcore22:41:553
29805050,0irq/28-eth0-rx-0-21swapper/322:13:373
29805050,0irq/28-eth0-rx-0-21swapper/321:36:513
29805050,0irq/28-eth0-rx-0-21swapper/321:26:553
29805050,0irq/28-eth0-rx-0-21swapper/319:46:533
29805050,0irq/28-eth0-rx-0-21swapper/300:43:453
29805050,0irq/28-eth0-rx-0-21swapper/300:36:503
29805050,0irq/28-eth0-rx-0-21swapper/300:34:433
259950,0migration/29489-21dump-pmu-power23:36:342
259950,0migration/25581-21timerandwakeup23:12:052
259950,0migration/24948-21munin-node20:56:592
259950,0migration/229667-21kthreadcore21:16:552
259950,0migration/226005-21kthreadcore21:51:552
259950,0migration/223338-21sh22:07:242
259950,0migration/221220-21sh21:47:242
259950,0migration/210954-21kthreadcore20:16:562
234289955,0cyclictest0-21swapper/223:57:482
234289955,0cyclictest0-21swapper/222:56:092
234289955,0cyclictest0-21swapper/222:46:142
234289955,0cyclictest0-21swapper/221:36:422
234289955,0cyclictest0-21swapper/221:28:302
234289955,0cyclictest0-21swapper/200:49:122
234289955,0cyclictest0-21swapper/200:09:562
234269955,0cyclictest0-21swapper/023:41:490
234269955,0cyclictest0-21swapper/023:16:450
234269955,0cyclictest0-21swapper/022:58:470
234269955,0cyclictest0-21swapper/022:46:570
234269955,0cyclictest0-21swapper/021:48:470
234269953,0cyclictest9054-21kworker/0:221:57:470
234269953,0cyclictest8901-21kworker/0:122:02:510
234269953,0cyclictest30116-21kworker/0:200:24:140
234269950,0cyclictest30612-21munin-run19:26:370
234269950,0cyclictest0-21swapper/023:38:020
234269950,0cyclictest0-21swapper/022:13:410
234269950,0cyclictest0-21swapper/021:26:330
234269950,0cyclictest0-21swapper/000:44:340
179950,0migration/14002-21kthreadcore19:51:541
179950,0migration/131156-21runrttasks21:56:051
179950,0migration/126162-21kthreadcore21:31:551
179950,0migration/126144-21idleruntime22:11:521
179950,0migration/124980-21cpuspeed_turbos00:41:511
179950,0migration/117043-21kthreadcore22:41:561
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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