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2026-07-26 - 12:07
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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 Jul 26, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1753524940,0sleep10-21swapper/119:24:221
1777423425,0sleep30-21swapper/319:27:083
1759123425,0sleep20-21swapper/219:24:592
1751422826,0sleep00-21swapper/019:24:050
29805070,0irq/28-eth0-rx-0-21swapper/323:13:543
8305060,0irq/26-0000:00:6222-21munin-run23:08:362
4160,0ktimersoftd/00-21swapper/023:31:300
35160,0ktimersoftd/30-21swapper/323:31:303
339960,0migration/34842-21sh23:04:343
339960,0migration/328047-21sh00:16:233
339960,0migration/323384-21taskset00:52:203
339960,0migration/314349-21sh21:38:443
339960,0migration/314181-21sendmail_mailtr21:14:003
329960,0watchdog/32601-21sh00:02:073
29805060,0irq/28-eth0-rx-0-21swapper/322:58:503
27160,0ktimersoftd/20-21swapper/223:31:302
19160,0ktimersoftd/10-21swapper/123:31:301
179739966,0cyclictest0-21swapper/200:26:432
179719965,0cyclictest11404-21munin-node23:48:530
8305050,0irq/26-0000:00:29365-21cut20:43:362
8305050,0irq/26-0000:00:26386-21latency_hist22:23:352
8305050,0irq/26-0000:00:23506-21latency_hist23:18:362
8305050,0irq/26-0000:00:22970-21latency_hist21:43:362
35150,0ktimersoftd/30-21swapper/323:19:213
339950,0migration/35889-21kthreadcore20:48:543
339950,0migration/34824-21taskset21:32:033
339950,0migration/33611-21kthreadcore19:38:533
339950,0migration/332683-21idleruntime21:48:533
339950,0migration/332267-21taskset19:38:013
339950,0migration/330112-21idleruntime00:18:533
339950,0migration/32986-21kthreadcore21:08:543
339950,0migration/327577-21kthreadcore22:03:543
339950,0migration/327397-21kthreadcore00:33:573
339950,0migration/327315-21fschecks_count22:23:523
339950,0migration/326386-21munin-node23:38:513
339950,0migration/32630-21kthreadcore23:23:543
339950,0migration/325046-21runrttasks23:54:023
339950,0migration/320168-21kthreadcore20:13:553
339950,0migration/315725-21ntp_offset22:13:563
339950,0migration/314339-21sh00:28:493
339950,0migration/313720-21switchtime19:44:013
339950,0migration/312213-21fschecks_time22:33:513
329950,0watchdog/35648-21grep20:03:543
329950,0watchdog/324390-21sensors_volt19:28:583
329950,0watchdog/315562-21kthreadcore00:08:553
329950,0watchdog/313313-21kthreadcore20:53:543
329950,0watchdog/312887-21munin-node23:08:593
329950,0watchdog/30-21swapper/321:58:553
329950,0watchdog/30-21swapper/321:23:513
29815050,0irq/29-eth0-tx-6499-21munin-node23:08:502
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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