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2025-12-06 - 09:42
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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 Sat Dec 06, 2025 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17261991203,62cyclictest30588-21apt-get23:08:511
17261991203,62cyclictest30588-21apt-get23:08:511
1106821140,5sleep111069-21apt-get21:38:371
172569911245,38cyclictest28015-21sh23:03:550
172569910944,27cyclictest6946-21taskset23:23:510
17269991076,76cyclictest406-21apt-get19:53:442
17269991063,78cyclictest6891-21apt-get23:23:442
17269991062,73cyclictest22958-21apt-get19:23:542
15762210610,66sleep015763-21/usr/sbin/munin19:03:390
172569910535,31cyclictest0-21swapper/020:18:400
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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