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2026-05-07 - 20:38
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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
Characteristics of the 20 highest latencies:
System rackeslot2.osadl.org (updated Thu May 07, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
60414621130,2sleep30-21swapper/312:00:213
64043721060,1sleep00-21swapper/012:22:540
39068421050,2sleep30-21swapper/309:40:233
190154992617,2cyclictest134050irq/121-eno109:40:021
190155992321,1cyclictest0-21swapper/212:35:032
190153992312,6cyclictest0-21swapper/010:25:020
383433398220,4rtkit-daemon3851704-21mta-sts-daemon12:15:511
190155992217,3cyclictest0-21swapper/207:10:012
383433398210,2rtkit-daemon3851704-21mta-sts-daemon09:11:501
190155992119,1cyclictest0-21swapper/212:30:002
190154992118,2cyclictest603122-21cron12:00:001
190154992116,3cyclictest580649-21/usr/sbin/munin11:45:221
190153992118,2cyclictest0-21swapper/008:40:000
190153992113,7cyclictest445145-21kthreadcore10:15:250
19015499209,3cyclictest0-21swapper/110:05:321
190154992017,2cyclictest236399-21latency_hist07:45:001
190154992017,2cyclictest1326-21systemd-logind08:20:021
190154992015,3cyclictest423729-21kthreadcore10:00:241
19015399209,7cyclictest519796-21apt-get11:05:180
190153992017,2cyclictest473646-21apt-key10:35:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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