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2026-07-23 - 19:33
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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 23, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
367324939,0sleep10-21swapper/107:28:161
2913124039,0sleep00-21swapper/007:23:270
328623627,0sleep30-21swapper/307:24:063
345823526,0sleep20-21swapper/207:25:572
3757991111,0cyclictest3524-21snmpd08:11:590
37739970,0cyclictest0-21swapper/211:18:242
29815070,0irq/29-eth0-tx-0-21swapper/211:28:482
37669966,0cyclictest0-21swapper/107:48:471
339960,0migration/35636-21sh12:11:543
339960,0migration/330773-21sh10:51:403
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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