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2026-06-19 - 10:34
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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 Fri Jun 19, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
652023723,0sleep00-21swapper/019:21:030
689023627,0sleep30-21swapper/319:25:183
653423626,0sleep20-21swapper/219:21:132
667923425,0sleep10-21swapper/119:22:521
69889966,0cyclictest0-21swapper/220:05:472
339960,0migration/39994-21sh00:45:443
339960,0migration/38718-21sh23:29:553
339960,0migration/34706-21kthreadcore23:45:523
339960,0migration/34124-21sh22:49:593
339960,0migration/332171-21munin-node22:25:553
339960,0migration/320893-21sh22:40:513
29815060,0irq/29-eth0-tx-3689-21munin-node19:46:000
29815060,0irq/29-eth0-tx-32481-21munin-node20:05:560
29805060,0irq/28-eth0-rx-28183-21processes23:00:563
29805060,0irq/28-eth0-rx-26577-21kernelversion00:35:543
29805060,0irq/28-eth0-rx-0-21swapper/320:10:503
149960,0migration/025722-21sh22:25:330
149960,0migration/022732-21kthreadcore23:55:540
149960,0migration/012807-21sh00:08:200
8305050,0irq/26-0000:00:4021-21if_eth1.223:45:502
8305050,0irq/26-0000:00:2516-21crond23:45:352
69879955,0cyclictest0-21swapper/123:24:561
69879955,0cyclictest0-21swapper/120:05:481
69879954,0cyclictest29665-21ssh21:50:111
69879950,0cyclictest0-21swapper/100:44:231
69879950,0cyclictest0-21swapper/100:28:371
69879950,0cyclictest0-21swapper/100:11:361
69869955,0cyclictest0-21swapper/021:20:370
69869950,0cyclictest0-21swapper/023:46:080
69869950,0cyclictest0-21swapper/000:40:320
339950,0migration/38491-21kthreadcore21:15:523
339950,0migration/38320-21fschecks_time00:25:493
339950,0migration/37039-21kthreadcore21:35:523
339950,0migration/36532-21aten_r1power_fr21:55:453
339950,0migration/3345-21kthreadcore21:30:543
339950,0migration/332565-21missed_timers23:40:543
339950,0migration/323183-21taskset23:18:293
339950,0migration/32196-21kthreadcore20:50:523
339950,0migration/320107-21kthreadcore19:30:523
339950,0migration/319522-21latency_hist22:40:343
339950,0migration/319081-21munin-node19:55:483
339950,0migration/318653-21pmu-power21:40:573
339950,0migration/317452-21if_eth1.200:30:523
339950,0migration/316879-21munin-node19:50:553
339950,0migration/316684-21kthreadcore00:10:543
339950,0migration/315094-21cpuspeed_turbos21:00:483
339950,0migration/314483-21munin-node22:55:503
339950,0migration/313922-21taskset19:27:593
339950,0migration/313775-21kthreadcore23:50:533
339950,0migration/311624-21diskmemload22:51:483
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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