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2026-09-05 - 10:04
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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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 10 highest latencies:
System rackbslot7.osadl.org (updated Sat Sep 05, 2026 00:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3267721296,17sleep00-21swapper/019:08:420
456991166,87cyclictest13204-21kworker/u18:1+rpciod22:20:591
3276521168,78sleep132766-21cron19:09:531
44799114102,8cyclictest170-21jbd2/mmcblk2p2-822:20:090
456991056,82cyclictest7237-21kworker/u19:1+ext4-rsv-conversion21:15:161
4569910421,44cyclictest12365-21latency_hist19:44:521
4569910334,35cyclictest0-21swapper/122:35:161
1284621010,5sleep30-21swapper/323:50:223
447999863,28cyclictest439-21cyclictest21:19:000
464999535,54cyclictest20829-21fschecks_count21:30:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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