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2026-04-21 - 18:22
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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 Apr 21, 2026 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
129769910737753397,53980cyclictest0-21swapper09:48:000
129769910719253451,53620cyclictest30296-21diskmemload10:01:440
129769910702653408,53551cyclictest0-21swapper09:39:480
129769910675053411,53273cyclictest0-21swapper08:17:340
129769910672953425,53239cyclictest0-21swapper12:04:200
129769910667853412,53177cyclictest21115-1kworker/u3:211:46:140
129769910661953453,53072cyclictest0-21swapper08:39:510
129769910656253453,53109cyclictest0-21swapper07:44:350
129769910653353379,53089cyclictest0-21swapper11:52:260
129769910652353469,53054cyclictest0-21swapper11:40:530
129769910648553454,53031cyclictest0-21swapper09:01:370
129769910648453464,53020cyclictest0-21swapper08:49:130
129769910647453453,53021cyclictest0-21swapper11:09:440
129769910647453444,53030cyclictest0-21swapper10:56:000
129769910646653450,53016cyclictest0-21swapper09:23:530
129769910646453411,53053cyclictest0-21swapper11:31:200
129769910644553401,53044cyclictest0-21swapper10:26:510
129769910644253398,53044cyclictest0-21swapper09:51:110
129769910643953437,53002cyclictest0-21swapper07:48:360
129769910643553394,53041cyclictest0-21swapper11:18:560
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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