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2026-09-24 - 19:53
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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 Sep 24, 2026 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25862212311,83sleep125943-21grep07:04:201
25862212311,83sleep125943-21grep07:04:201
264499911848,35cyclictest3340-21latency07:33:591
26444991133,28cyclictest343-21runrttasks12:17:590
26444991093,20cyclictest12620-21apt-get08:03:470
264449910746,54cyclictest0-21swapper/009:14:100
26444991063,29cyclictest6530-21/usr/sbin/munin11:59:030
264449910545,55cyclictest0-21swapper/008:24:080
26444991044,52cyclictest7769-21apt-get07:48:450
264449910418,32cyclictest3977-21latency11:53:580
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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