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2026-07-06 - 08:59
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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 Mon Jul 06, 2026 00:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
49049910858,37cyclictest3996-21apt-get20:32:480
4838210513,64sleep04854-21latencyplot18:57:410
49049910349,44cyclictest21684-21apt-get19:47:490
49049910234,26cyclictest8481-21seq00:26:560
49049910234,26cyclictest8481-21seq00:26:560
49049910036,23cyclictest14589-21seq21:54:170
4904999930,24cyclictest0-21swapper/021:17:030
4904999734,23cyclictest21652-21seq23:00:150
4904999642,18cyclictest11935-21/usr/sbin/munin23:38:060
4904999629,25cyclictest0-21swapper/021:36:540
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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