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2026-04-01 - 19:39
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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 20 highest latencies:
System rack1slot2.osadl.org (updated Wed Apr 01, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1280523726,0sleep20-21swapper/207:14:382
624923627,0sleep10-21swapper/107:14:131
1307423524,0sleep00-21swapper/007:17:440
1305123228,0sleep30-21swapper/307:17:273
329970,0watchdog/30-21swapper/311:28:423
339960,0migration/3437-21sh09:23:373
339960,0migration/34124-21munin-node09:59:293
339960,0migration/330687-21sh12:44:453
339960,0migration/330435-21unixbench_singl10:14:333
339960,0migration/328396-21sh09:55:063
339960,0migration/326457-21sh09:36:573
339960,0migration/325552-21sh10:33:473
339960,0migration/31889-21sh11:53:543
339960,0migration/317537-21aten_r1power_po11:44:203
339960,0migration/317537-21aten_r1power_po11:44:203
339960,0migration/316146-21munin-node10:09:223
339960,0migration/314312-21sh10:07:403
339960,0migration/313616-21munin-node11:04:213
329960,0watchdog/321010-21irqrtprio12:04:263
29815060,0irq/29-eth0-tx-10188-21munin-node08:24:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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