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2026-05-19 - 00:11
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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 Mon May 18, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1132524738,0sleep10-21swapper/107:19:361
1155424132,0sleep20-21swapper/207:22:132
1147923121,0sleep30-21swapper/307:21:223
1123423026,0sleep00-21swapper/007:18:310
35160,0ktimersoftd/30-21swapper/311:24:563
339960,0migration/38151-21taskset11:58:223
339960,0migration/317720-21sh12:04:513
339960,0migration/31702-21sh09:45:453
29815060,0irq/29-eth0-tx-5131-21munin-node08:48:160
29805060,0irq/28-eth0-rx-7164-21perl12:38:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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