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2026-08-15 - 20:34
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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 Sat Aug 15, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
261699599671,64cyclictest0-21swapper/111:42:111
261699599660,64cyclictest2649279-21fschecks_time08:50:141
2616995996343,19cyclictest2083510-1kworker/1:1H07:44:591
261699599630,62cyclictest0-21swapper/110:04:011
2616995996158,2cyclictest0-21swapper/112:06:491
2616995996128,32cyclictest2083510-1kworker/1:1H10:05:141
2616995996042,17cyclictest2712930-21kworker/1:210:15:011
2616995995944,14cyclictest2648620-21kworker/1:108:55:151
2616995995944,13cyclictest2795739-21kworker/1:112:35:161
2616995995942,16cyclictest2763325-21kworker/1:111:15:141
2616995995942,16cyclictest2626602-21kworker/1:107:45:171
2616995995942,15cyclictest2662862-21kworker/1:009:35:151
2616995995938,20cyclictest26350irq/16-i801_smb10:40:261
2616995995927,32cyclictest2083510-1kworker/1:1H07:30:321
2616995995843,14cyclictest2083510-1kworker/1:1H11:10:061
2616995995842,15cyclictest2679914-21kworker/1:109:50:061
2616995995842,15cyclictest2083510-1kworker/1:1H08:10:141
2616995995841,16cyclictest2083510-1kworker/1:1H11:20:141
2616995995840,16cyclictest2795739-21kworker/1:111:45:151
2616995995840,16cyclictest2729269-21kworker/1:210:35:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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