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2026-08-12 - 21:45
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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 Wed Aug 12, 2026 00:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30012213114,63sleep029991-21apt-get19:05:230
314839912646,31cyclictest13067-21apt-get19:50:090
30250211711,75sleep230251-21/usr/sbin/munin19:06:312
314839911437,41cyclictest2557-21/usr/sbin/munin23:35:200
314839910738,20cyclictest20486-21ssh21:30:460
314839910644,25cyclictest10963-21apt-get19:45:130
314839910638,34cyclictest0-21swapper/023:45:140
314839910638,29cyclictest18476-21ssh22:19:190
314839910631,52cyclictest0-21swapper/023:50:150
314839910631,52cyclictest0-21swapper/023:50:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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