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2026-06-18 - 11:03
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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 Thu Jun 18, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1342024736,0sleep30-21swapper/319:20:323
2024124334,0sleep20-21swapper/219:24:152
2027123228,0sleep10-21swapper/119:24:381
1997222925,0sleep00-21swapper/019:21:050
339970,0migration/38453-21sh22:43:173
35160,0ktimersoftd/31218-21ssh00:10:523
339960,0migration/37126-21sh00:53:063
339960,0migration/330885-21sh23:35:003
339960,0migration/329207-21sh00:29:583
339960,0migration/32838-21pmu-power23:15:503
339960,0migration/324179-21sh23:49:053
339960,0migration/322962-21sh00:45:143
339960,0migration/319438-21sh00:22:033
339960,0migration/311490-21kthreadcore21:30:483
339960,0migration/310894-21sh00:17:163
329960,0watchdog/314394-21munin-node23:40:573
29815060,0irq/29-eth0-tx-6571-21munin-node20:45:480
29815060,0irq/29-eth0-tx-20964-21munin-node20:55:460
29805060,0irq/28-eth0-rx-26188-21iostat_ios23:50:463
29805060,0irq/28-eth0-rx-11299-21python22:05:503
204189965,0cyclictest17893-21grep21:35:422
204189960,0cyclictest0-21swapper/220:40:482
204169966,0cyclictest0-21swapper/022:40:410
149960,0migration/03231-21sh00:15:200
149960,0migration/013592-21aten2.4-expect20:05:410
4150,0ktimersoftd/00-21swapper/023:31:080
339950,0migration/39491-21taskset22:45:313
339950,0migration/38729-21kthreadcore21:05:493
339950,0migration/37088-21munin-node00:35:453
339950,0migration/36165-21sh22:23:233
339950,0migration/34377-21kthreadcore20:40:483
339950,0migration/33810-21munin-node19:35:473
339950,0migration/322002-21munin-node23:10:463
339950,0migration/320453-21kthreadcore20:30:453
339950,0migration/315440-21kthreadcore20:50:473
329950,0watchdog/37112-21fschecks_count20:45:403
329950,0watchdog/3502-21if_eth021:25:453
329950,0watchdog/324561-21iostat00:45:453
329950,0watchdog/311176-21interrupts00:00:453
329950,0watchdog/310344-21aten_r1power_po21:10:413
329950,0watchdog/30-21swapper/320:25:403
29815050,0irq/29-eth0-tx-9547-21munin-node22:45:402
29815050,0irq/29-eth0-tx-6412-21tr00:15:492
29815050,0irq/29-eth0-tx-4328-21kthreadcore22:40:472
29815050,0irq/29-eth0-tx-2942-21munin-node21:05:490
29815050,0irq/29-eth0-tx-24702-21cat23:30:462
29815050,0irq/29-eth0-tx-21973-21ssh00:25:442
29815050,0irq/29-eth0-tx-20960-21ssh22:12:442
29815050,0irq/29-eth0-tx-16326-21munin-node23:45:402
29815050,0irq/29-eth0-tx-0-21swapper/223:30:032
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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