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2026-07-25 - 04:26
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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 rack3slot6.osadl.org (updated Sat Jul 25, 2026 00:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1367210418,73sleep00-21swapper/019:05:290
239699954,81cyclictest1770-21cron23:40:011
209029323,24sleep10-21swapper/119:08:431
2396998833,50cyclictest21651-21cron00:35:001
239299885,66cyclictest0-21swapper/000:20:130
2392998628,51cyclictest12354-21/usr/sbin/munin22:35:320
2396998427,52cyclictest20362-21cron21:30:151
239299842,59cyclictest9057-40logrotate00:00:000
2392998417,46cyclictest11810-21uname00:05:350
239699836,22cyclictest28134-21apt-get20:20:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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