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2026-04-14 - 22:09
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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 Tue Apr 14, 2026 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2621121348,17sleep00-21swapper/006:59:400
26647991172,47cyclictest20098-21apt-get11:23:292
26647991153,52cyclictest5858-21ssh10:59:182
266389911137,32cyclictest6045-21apt-get11:53:210
266389911137,32cyclictest6045-21apt-get11:53:210
266389910935,31cyclictest3067-21apt-get11:48:260
266389910435,30cyclictest12617-21ssh12:03:410
266389910234,30cyclictest14499-21apt-get11:13:290
26638991022,88cyclictest20098-21apt-get11:23:260
266389910215,71cyclictest22913-21apt-get10:33:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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