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2026-07-16 - 08:14
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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 rack3slot6.osadl.org (updated Thu Jul 16, 2026 00:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11873210330,60sleep10-21swapper/119:05:261
12934999541,37cyclictest23487-21/usr/sbin/munin21:10:180
1119628927,51sleep00-21swapper/019:05:150
272092870,7sleep027212-21grep19:45:360
12936997961,11cyclictest26-21ksoftirqd/119:10:151
12934997641,29cyclictest24746-21telnet22:45:150
12934997640,16cyclictest13012-21/usr/sbin/munin19:10:240
12934997542,27cyclictest26451-21telnet22:50:150
12934997412,47cyclictest14-21ksoftirqd/022:00:360
12934997135,21cyclictest14-21ksoftirqd/019:40:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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