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2026-07-01 - 08:54
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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 Wed Jul 01, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
355325442,0sleep20-21swapper/219:24:372
358823625,0sleep30-21swapper/319:25:023
361223525,0sleep10-21swapper/119:25:201
371622824,0sleep00-21swapper/019:26:310
8305060,0irq/26-0000:00:18192-21crond19:36:323
37949966,0cyclictest0-21swapper/222:31:482
37949965,0cyclictest0-21swapper/223:51:532
37949965,0cyclictest0-21swapper/223:51:532
37949960,0cyclictest0-21swapper/200:19:382
339960,0migration/39387-21sh00:07:213
339960,0migration/37082-21rt-features21:16:533
339960,0migration/331849-21sh23:45:393
339960,0migration/330121-21sh00:26:003
339960,0migration/327539-21sh00:19:313
339960,0migration/319492-21sh22:03:383
339960,0migration/317006-21kthreadcore20:41:503
339960,0migration/316254-21sh21:42:363
339960,0migration/310756-21cpuspeed_turbos22:56:463
29805060,0irq/28-eth0-rx-4918-21perl23:11:463
29805060,0irq/28-eth0-rx-26796-21cat21:31:513
29805060,0irq/28-eth0-rx-18601-21df_inode21:46:473
149960,0migration/09031-21fschecks_time22:36:480
149960,0migration/030627-21sh00:26:400
37949950,0cyclictest0-21swapper/221:40:052
37939955,0cyclictest0-21swapper/122:37:141
37939955,0cyclictest0-21swapper/122:14:321
37939955,0cyclictest0-21swapper/100:08:501
37939954,0cyclictest5204-21awk20:11:481
37939950,0cyclictest0-21swapper/123:17:451
37929955,0cyclictest0-21swapper/022:26:460
37929950,0cyclictest0-21swapper/022:47:440
37929950,0cyclictest0-21swapper/000:06:440
339950,0migration/37673-21munin-node23:31:503
339950,0migration/34772-21sh22:14:273
339950,0migration/331867-21kthreadcore23:26:503
339950,0migration/331507-21sh22:31:223
339950,0migration/330566-21munin-node20:51:483
339950,0migration/329263-21taskset20:51:043
339950,0migration/328216-21kthreadcore00:01:523
339950,0migration/321390-21kthreadcore23:01:523
339950,0migration/318256-21kthreadcore21:26:513
339950,0migration/316978-21irqcore00:36:523
339950,0migration/316896-21diskmemload22:41:443
339950,0migration/313658-21needreboot19:51:513
339950,0migration/31278-21latency23:06:543
339950,0migration/311554-21kthreadcore22:36:523
329950,0watchdog/327454-21missed_timers23:21:523
329950,0watchdog/322865-40yum-updatesd-he22:26:203
329950,0watchdog/319873-21awk21:06:483
29815050,0irq/29-eth0-tx-32135-21ssh23:46:262
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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