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2026-07-16 - 12:26
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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 Thu Jul 16, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2547925857,0sleep00-21swapper/019:23:460
2565724435,0sleep10-21swapper/119:25:511
2573923627,0sleep20-21swapper/219:26:482
2573523627,0sleep30-21swapper/319:26:453
258949983,0cyclictest872-21awk00:03:012
258949983,0cyclictest1135-21awk23:28:022
258949973,0cyclictest16805-21awk20:28:002
339960,0migration/37474-21sh21:44:363
339960,0migration/330591-21sh21:39:453
339960,0migration/330591-21sh21:39:453
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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