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2026-07-23 - 22:32
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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 Thu Jul 23, 2026 12:44:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32222222790,15sleep232219-21apt-config06:56:302
32222222790,15sleep232219-21apt-config06:56:302
30895215612,96sleep030975-21fschecks_time06:51:520
30895215612,96sleep030975-21fschecks_time06:51:520
32317991173,39cyclictest7705-21apt-get11:36:480
32317991124,32cyclictest18973-21cstates07:51:430
32344991113,78cyclictest24149-21apt-get10:16:442
32344991083,81cyclictest352-21runrttasks07:56:532
32344991083,81cyclictest352-21runrttasks07:56:532
32184210819,53sleep132063-21/usr/sbin/munin06:56:301
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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