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2026-03-29 - 16:18
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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 rackfslot7.osadl.org (updated Sun Mar 29, 2026 12:46:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1096889999213,39cyclictest1245968-21taskset11:38:373
1096889997638,19cyclictest1272668-21ntpq12:25:213
109688999760,58cyclictest0-21swapper/308:43:413
1096889997517,39cyclictest1276351-21sshd12:34:443
109689199728,25cyclictest0-21swapper/511:00:165
109689199728,25cyclictest0-21swapper/511:00:165
109688999728,59cyclictest1211180-21sort10:35:153
1096889997215,38cyclictest1224198-21/usr/sbin/munin11:00:013
1096889997215,38cyclictest1224198-21/usr/sbin/munin11:00:013
1096889997134,18cyclictest511ktimers/309:40:493
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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