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2026-05-14 - 07:42
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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 May 14, 2026 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139559911358,11cyclictest12504-21kworker/u17:2+xprtiod21:46:450
139559911349,19cyclictest13942-21cyclictest00:21:390
139559911349,19cyclictest13942-21cyclictest00:21:390
1378921066,16sleep10-21swapper/119:01:061
12933210432,36sleep20-21swapper/218:56:472
139649910210,67cyclictest7055-21apt-get00:11:301
13964991009,67cyclictest20441-21apt-get22:46:291
13964999730,27cyclictest0-21swapper/121:51:481
1397399952,34cyclictest15297-21fschecks_count20:41:332
13973999337,49cyclictest2374-21systemd-journal20:56:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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