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2026-08-25 - 14:03
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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 Tue Aug 25, 2026 12:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
256232910,5chrt25622-21sshd09:07:080
159132830,10sleep126-21ksoftirqd/108:40:181
1490228327,44sleep10-21swapper/107:06:251
1541899827,65cyclictest0-21swapper/012:05:160
15425997834,9cyclictest26-21ksoftirqd/109:49:221
15425997528,41cyclictest26-21ksoftirqd/110:31:081
144032758,54sleep013674-21/usr/sbin/munin07:05:250
15425997461,9cyclictest26-21ksoftirqd/110:50:351
1541899706,54cyclictest22596-21apt-get09:00:140
15418997034,18cyclictest14-21ksoftirqd/008:40:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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