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2026-05-18 - 14:50
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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 May 18, 2026 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
141679910707853434,53644cyclictest0-21swapper21:28:270
141679910702053422,53499cyclictest14426-21munin-node21:40:200
141679910696453482,53385cyclictest25371-21ssh23:28:520
141679910689553424,53408cyclictest3791-21ssh23:44:360
141679910681653473,53343cyclictest0-21swapper22:12:500
141679910671653449,53267cyclictest0-21swapper20:35:020
141679910670553428,53186cyclictest10137-21ssh23:53:190
141679910664453481,53066cyclictest2735-21ssh00:29:490
141679910662153467,53057cyclictest3922-21ssh22:57:130
141679910659153474,53025cyclictest19450irq/14-ata_piix22:01:570
141679910658353456,53038cyclictest19015-1kworker/u3:122:51:010
141679910657253395,53177cyclictest0-21swapper22:43:390
141679910654953392,53067cyclictest0-21swapper23:31:020
141679910654653388,53093cyclictest0-21swapper21:06:510
141679910648453466,53018cyclictest0-21swapper20:52:570
141679910647153444,53027cyclictest0-21swapper21:12:020
141679910645953406,53053cyclictest0-21swapper20:05:430
141679910645653406,53050cyclictest0-21swapper00:33:400
141679910644653399,53047cyclictest0-21swapper21:23:160
141679910644153397,53044cyclictest0-21swapper22:20:320
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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