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2026-05-04 - 01:25
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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 Sun May 03, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1267137997441,32cyclictest1288339-21kworker/1:208:20:141
126713799740,72cyclictest0-21swapper/107:50:141
1267137997141,28cyclictest1458138-21kworker/1:112:10:001
1267137996838,29cyclictest3178045-1kworker/1:1H09:55:151
1267137996837,29cyclictest3178045-1kworker/1:1H10:10:141
1267137996738,27cyclictest1412931-21kworker/1:211:15:141
1267137996736,29cyclictest1283444-21kworker/1:108:15:141
1267137996641,23cyclictest1437074-21kworker/1:211:35:151
1267137996640,25cyclictest1369856-21kworker/1:210:30:161
1267137996640,25cyclictest1369856-21kworker/1:210:30:151
1267137996639,26cyclictest1417737-21kworker/1:011:25:131
126713799660,64cyclictest1274260-21fschecks_count07:30:151
126713799650,64cyclictest0-21swapper/110:21:461
1267137996439,24cyclictest1279639-21kworker/1:007:55:141
126713799640,63cyclictest0-21swapper/109:15:351
126713799640,2cyclictest0-21swapper/112:20:381
1267137996334,28cyclictest1270568-21kworker/1:107:35:131
1267137996331,29cyclictest1291182-21kworker/1:008:45:151
1267137996233,27cyclictest3178045-1kworker/1:1H10:30:001
1267137996233,27cyclictest1283444-21kworker/1:108:00:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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