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2026-06-27 - 02:48
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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
Characteristics of the 20 highest latencies:
System rackcslot6.osadl.org (updated Fri Jun 26, 2026 12:46:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1403072993940,391cyclictest1526903-21systemd-userwor10:35:021
140307299391390,1cyclictest1503181-21kworker/1:011:00:021
140307299390389,1cyclictest1503181-21kworker/1:010:30:021
140307299390389,1cyclictest0-21swapper/112:01:021
140307299389388,1cyclictest1566353-21kworker/1:212:34:021
140307299389388,1cyclictest1566353-21kworker/1:212:34:011
140307299388387,1cyclictest1685341-21kworker/1:109:40:021
140307299388387,1cyclictest1685341-21kworker/1:108:20:021
140307299388387,1cyclictest1503181-21kworker/1:010:24:011
140307299388387,1cyclictest1503181-21kworker/1:009:55:021
140307299388387,1cyclictest0-21swapper/108:19:021
140307299387386,1cyclictest1566353-21kworker/1:212:37:021
140307299387385,1cyclictest1685341-21kworker/1:108:37:021
140307299386385,1cyclictest1685341-21kworker/1:108:40:021
140307299386385,1cyclictest1685341-21kworker/1:108:13:021
140307299386385,1cyclictest1685341-21kworker/1:108:13:021
140307299386385,1cyclictest1685341-21kworker/1:107:30:021
140307299386385,1cyclictest1566353-21kworker/1:212:28:021
140307299386385,1cyclictest1566353-21kworker/1:211:47:011
140307299385384,1cyclictest1503181-21kworker/1:010:27:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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