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2026-04-12 - 14:05
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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 10 highest latencies:
System rack1slot2.osadl.org (updated Sun Apr 12, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2467225041,0sleep20-21swapper/207:19:442
2452525041,0sleep10-21swapper/107:18:031
2459824028,0sleep30-21swapper/307:18:533
2436123026,0sleep00-21swapper/007:16:100
29805070,0irq/28-eth0-rx-0-21swapper/310:20:093
35160,0ktimersoftd/320287-21cut11:00:203
35160,0ktimersoftd/30-21swapper/311:11:233
339960,0migration/35302-21latency_hist11:50:023
339960,0migration/328759-21missed_timers12:00:213
339960,0migration/328558-21munin-node12:40:173
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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