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2025-07-12 - 14:23
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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 Sat Jul 12, 2025 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
160429910683153426,53341cyclictest3950irq/9-acpi23:17:080
160429910679453415,53284cyclictest2114-21munin-node21:34:180
160429910679153482,53244cyclictest9-21ksoftirqd/022:18:310
160429910678853477,53246cyclictest9-21ksoftirqd/023:31:320
160429910676253406,53292cyclictest11-21rcu_preempt00:06:520
160429910671253473,53239cyclictest0-21swapper20:27:490
160429910671253469,53243cyclictest0-21swapper23:06:450
160429910655453391,53098cyclictest0-21swapper00:32:590
160429910652553441,53084cyclictest0-21swapper21:04:490
160429910647653450,53026cyclictest0-21swapper21:48:120
160429910647153454,53017cyclictest0-21swapper00:17:050
160429910646253407,53055cyclictest0-21swapper19:53:290
160429910644753401,53046cyclictest0-21swapper23:45:460
160429910644353441,53002cyclictest0-21swapper20:44:540
160429910644353402,53041cyclictest0-21swapper22:01:560
160429910643653396,53040cyclictest0-21swapper20:24:480
160429910643053435,52995cyclictest0-21swapper23:38:040
160429910640953385,52959cyclictest9-21ksoftirqd/021:21:540
160429910638953388,52937cyclictest31129-21kworker/0:019:37:240
160429910628753404,52883cyclictest0-21swapper19:27:310
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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