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2026-01-02 - 20:17
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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 20 highest latencies:
System rack3slot6.osadl.org (updated Fri Jan 02, 2026 12:45:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
204721130,6chrt2048-21/usr/sbin/munin08:30:340
4512998044,22cyclictest26582-21apt-get08:10:131
4508998027,14cyclictest14-21ksoftirqd/007:36:080
276327929,38sleep00-21swapper/007:05:130
4512997748,14cyclictest667-21apt-get11:30:141
4512997748,14cyclictest667-21apt-get11:30:141
4512997642,24cyclictest21295-21apt-get07:55:101
4512997546,15cyclictest4224-21apt-get11:40:131
4512997546,15cyclictest15618-21apt-get10:40:141
4512997546,13cyclictest11666-21apt-get09:00:131
4512997545,18cyclictest16939-21apt-get09:15:131
4512997545,15cyclictest15036-21apt-get12:10:131
322327530,32sleep10-21swapper/107:05:211
4512997446,15cyclictest16782-21apt-get12:15:141
4512997446,14cyclictest27470-21apt-get09:45:141
4512997443,16cyclictest5972-21apt-get11:45:151
4512997442,22cyclictest28329-21apt-get08:15:181
4512997436,25cyclictest12090-21apt-get07:30:151
4508997413,49cyclictest0-21swapper/011:05:140
4512997345,14cyclictest26121-21apt-get11:10:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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