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2025-11-19 - 08:52
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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 20 highest latencies:
System rackeslot3.osadl.org (updated Wed Nov 19, 2025 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1415744997148,22cyclictest1503767-21kworker/1:000:00:151
141574499660,63cyclictest1471089-21fschecks_count21:55:161
141574499650,2cyclictest0-21swapper/120:00:451
1415744996441,21cyclictest1421059-21kworker/1:120:05:151
141574499630,62cyclictest0-21swapper/120:14:551
1415744996258,2cyclictest0-21swapper/120:30:191
1415744996247,14cyclictest1503767-21kworker/1:000:05:021
1415744996246,15cyclictest1486735-21kworker/1:122:50:161
1415744996043,16cyclictest1503767-21kworker/1:023:40:181
1415744996041,18cyclictest1503767-21kworker/1:023:45:121
1415744996038,20cyclictest1520274-21kworker/1:200:35:001
1415744995944,14cyclictest1421059-21kworker/1:119:50:011
1415744995942,16cyclictest1478673-21kworker/1:222:20:171
1415744995941,17cyclictest1417204-21kworker/1:219:15:191
1415744995941,16cyclictest1421059-21kworker/1:119:45:181
1415744995938,19cyclictest3382725-1kworker/1:0H23:40:001
1415744995843,14cyclictest3382725-1kworker/1:0H21:01:111
1415744995843,14cyclictest1515943-21kworker/1:100:15:011
1415744995843,14cyclictest1478673-21kworker/1:222:25:141
1415744995842,15cyclictest1515943-21kworker/1:100:20:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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