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2025-12-08 - 11:38
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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
Characteristics of the 20 highest latencies:
System rack6slot6 (updated Mon Dec 08, 2025 00:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
318189910717953478,53604cyclictest2114-21munin-node23:36:270
318189910703753425,53489cyclictest8974-21ssh22:27:470
318189910681753482,53214cyclictest30828-21ssh22:13:330
318189910675453471,53193cyclictest9-21ksoftirqd/023:50:210
318189910674153409,53241cyclictest0-21swapper22:20:050
318189910667153389,53194cyclictest3950irq/9-acpi22:31:480
318189910667053264,53392cyclictest0-21swapper20:31:440
318189910666653406,53171cyclictest3950irq/9-acpi00:15:380
318189910664353395,53248cyclictest0-21swapper21:06:040
318189910657553412,53099cyclictest9-21ksoftirqd/023:24:130
318189910650353470,53033cyclictest0-21swapper23:57:330
318189910649353465,53028cyclictest0-21swapper22:17:440
318189910648453459,53025cyclictest0-21swapper23:19:420
318189910646553408,53057cyclictest0-21swapper20:42:470
318189910645053463,52891cyclictest23713-21ssh21:19:170
318189910644653439,53007cyclictest0-21swapper00:24:210
318189910643253437,52995cyclictest0-21swapper21:33:320
318189910639253463,52866cyclictest3950irq/9-acpi21:35:120
318189910630253474,52828cyclictest0-21swapper20:27:430
318189910630153467,52834cyclictest0-21swapper19:59:350
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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