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2025-08-27 - 05:53
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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 Wed Aug 27, 2025 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2105126463,0sleep20-21swapper/218:22:272
2095924027,0sleep10-21swapper/118:21:221
2126823827,0sleep30-21swapper/318:24:563
2127523026,0sleep00-21swapper/018:25:010
21358991414,0cyclictest23871-21snmpd23:04:551
329970,0watchdog/329892-21awk23:50:233
329970,0watchdog/30-21swapper/321:20:313
329970,0watchdog/30-21swapper/319:00:273
339960,0migration/37727-21sh20:27:023
339960,0migration/332641-21sh21:37:493
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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