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2026-07-14 - 06:59
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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 Tue Jul 14, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2365624940,0sleep20-21swapper/219:23:092
1713124140,0sleep00-21swapper/019:22:470
2371323523,0sleep10-21swapper/119:23:481
2368323026,0sleep30-21swapper/319:23:263
241109988,0cyclictest3524-21snmpd20:22:210
29805070,0irq/28-eth0-rx-0-21swapper/320:08:453
35160,0ktimersoftd/30-21swapper/320:02:373
339960,0migration/327394-21sh21:38:193
339960,0migration/326765-21sh22:34:343
339960,0migration/325580-21sh23:30:533
339960,0migration/316297-21sh23:24:063
339960,0migration/315210-21irqrtprio00:02:543
339960,0migration/311532-21sh00:56:383
29805060,0irq/28-eth0-rx-4043-21cut22:57:553
29805060,0irq/28-eth0-rx-22818-21df00:07:493
29805060,0irq/28-eth0-rx-20036-21cat20:52:533
29805060,0irq/28-eth0-rx-0-21swapper/300:20:363
259960,0migration/24064-21fschecks_count00:52:512
241129965,0cyclictest0-21swapper/221:46:432
241109960,0cyclictest0-21swapper/020:47:580
149960,0migration/019218-21kthreadcore20:52:530
149960,0migration/014889-21kthreadcore22:47:540
8305050,0irq/26-0000:00:2471-21kauditd22:07:372
662250,0sleep0671-21ssh22:19:340
662250,0sleep0671-21ssh22:19:340
339950,0migration/36533-21kthreadcore19:57:553
339950,0migration/35752-21munin-node19:33:023
339950,0migration/332567-21fschecks_time21:02:513
339950,0migration/330228-21kthreadcore21:22:543
339950,0migration/328437-21munin-node19:52:493
339950,0migration/327805-21taskset21:19:083
339950,0migration/325726-21latency_hist22:17:373
339950,0migration/325726-21latency_hist22:17:373
339950,0migration/325599-21fschecks_time00:27:523
339950,0migration/32545-21kthreadcore22:02:543
339950,0migration/325182-21kthreadcore20:32:563
339950,0migration/318792-21sh21:33:553
339950,0migration/31739-21kthreadcore20:17:553
339950,0migration/311954-21kthreadcore00:37:533
339950,0migration/31119-21aten_r1power_fr00:32:483
339950,0migration/310417-21kthreadcore20:22:563
329950,0watchdog/3944-21kthreadcore20:37:553
329950,0watchdog/36495-21mdstat23:17:563
329950,0watchdog/310241-21cut21:07:553
329950,0watchdog/30-21swapper/321:42:523
329950,0watchdog/30-21swapper/320:47:553
29815050,0irq/29-eth0-tx-371-21munin-node23:17:542
29815050,0irq/29-eth0-tx-3187-21ssh21:27:460
29815050,0irq/29-eth0-tx-24321-21munin-node19:28:010
29815050,0irq/29-eth0-tx-19528-21munin-node22:33:042
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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