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2025-10-21 - 03:56
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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 Tue Oct 21, 2025 00:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
172309910723253426,53683cyclictest2767-21gnome-settings-21:05:230
172309910676653458,53308cyclictest0-21swapper00:26:410
172309910660153471,53130cyclictest0-21swapper19:37:480
172309910658453450,53070cyclictest9-21ksoftirqd/021:13:450
172309910658153449,53068cyclictest9-21ksoftirqd/022:01:090
172309910655253450,53102cyclictest0-21swapper22:38:200
172309910651453471,53043cyclictest0-21swapper20:24:310
172309910650553475,53030cyclictest0-21swapper23:41:080
172309910649853466,53032cyclictest0-21swapper00:06:550
172309910648353458,53025cyclictest0-21swapper23:19:420
172309910645753473,52984cyclictest0-21swapper00:02:240
172309910645453447,52944cyclictest133750irq/9-eth022:56:250
172309910645353403,53050cyclictest0-21swapper21:01:520
172309910645153400,53051cyclictest0-21swapper23:06:380
172309910642853432,52996cyclictest0-21swapper19:59:440
172309910640253455,52884cyclictest9-21ksoftirqd/021:35:120
172309910632753465,52798cyclictest9-21ksoftirqd/019:46:400
172309910629353451,52777cyclictest9-21ksoftirqd/019:34:570
172309910622653430,52796cyclictest0-21swapper23:56:320
172309910621753474,52743cyclictest0-21swapper22:46:420
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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