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2026-06-16 - 06:12
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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 Tue Jun 16, 2026 00:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3246426680,3sleep30-21swapper/318:59:043
3246426680,3sleep30-21swapper/318:59:043
31139213818,19sleep10-21swapper/118:54:221
31139213818,19sleep10-21swapper/118:54:221
324849911053,22cyclictest8200-21sh21:54:032
324849910946,37cyclictest17874-21latency_hist23:04:032
32465991057,68cyclictest12337-21latency_hist23:49:040
324849910343,36cyclictest17837-21sh21:14:432
32465991026,76cyclictest2374-21systemd-journal22:24:270
3113221019,60sleep030967-21/usr/sbin/munin18:54:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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