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2026-09-01 - 06:04
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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 Sep 01, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1459023626,0sleep30-21swapper/319:30:283
1449223425,0sleep10-21swapper/119:29:181
1459923324,0sleep20-21swapper/219:30:352
1457023024,0sleep00-21swapper/019:30:130
8305060,0irq/26-0000:00:7351-21crond23:51:382
339960,0migration/37343-21sh23:51:383
339960,0migration/33123-21if_eth022:51:543
339960,0migration/320941-21sh22:04:073
329960,0watchdog/323643-21kthreadcore19:56:563
329960,0watchdog/30-21swapper/300:06:533
29815060,0irq/29-eth0-tx-29820-21munin-node21:11:590
29805060,0irq/28-eth0-rx-18529-21kthreadcore23:56:563
29805060,0irq/28-eth0-rx-16116-21tune2fs00:56:533
147729960,0cyclictest0-21swapper/121:38:391
149960,0migration/031486-21idleruntime00:46:540
149960,0migration/03023-21sh21:52:050
339950,0migration/36865-21aten2.4-expect00:51:513
339950,0migration/35539-21kthreadcore23:11:553
339950,0migration/35530-21taskset22:13:383
339950,0migration/330745-21sh23:45:253
339950,0migration/327895-21kthreadcore20:46:553
339950,0migration/327068-21taskset21:48:023
339950,0migration/326458-21kthreadcore22:26:573
339950,0migration/326386-21fschecks_count22:46:513
339950,0migration/324267-21kthreadcore23:21:553
339950,0migration/32369-21taskset21:36:413
339950,0migration/323069-21munin-node19:36:513
339950,0migration/323048-21kthreadcore23:01:553
339950,0migration/322212-21taskset21:04:393
339950,0migration/32166-21irqcore20:51:543
339950,0migration/320000-21kthreadcore20:16:573
339950,0migration/319894-21kthreadcore22:21:543
339950,0migration/318668-21fschecks_count00:16:523
339950,0migration/317345-21kthreadcore23:36:563
339950,0migration/316915-21kthreadcore19:31:563
339950,0migration/315874-21kthreadcore22:56:573
339950,0migration/315135-21kthreadcore20:36:563
339950,0migration/31074-21sh00:22:333
339950,0migration/310344-21kthreadcore22:16:573
329950,0watchdog/37024-21python20:07:003
329950,0watchdog/32768-21tr00:46:573
329950,0watchdog/325517-21kthreadcore20:21:563
329950,0watchdog/310481-21grep00:31:533
329950,0watchdog/30-21swapper/319:52:003
329950,0watchdog/30-21swapper/300:15:133
29815050,0irq/29-eth0-tx-8243-21munin-node20:56:550
29815050,0irq/29-eth0-tx-6103-21ssh22:15:182
29815050,0irq/29-eth0-tx-5852-21munin-node23:31:572
29815050,0irq/29-eth0-tx-4949-21munin-node21:56:572
29815050,0irq/29-eth0-tx-2118-21kthreadcore22:31:562
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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