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2025-12-02 - 02:27
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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 Mon Dec 01, 2025 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
214185799690,4cyclictest2194283-21fschecks_count09:45:151
2141857996856,11cyclictest0-21swapper/111:53:431
2141857996562,2cyclictest0-21swapper/110:48:421
2141857996461,2cyclictest0-21swapper/112:06:491
2141857996442,20cyclictest2178835-1kworker/1:0H11:20:001
214185799640,63cyclictest0-21swapper/107:25:151
214185799640,63cyclictest0-21swapper/107:25:151
214185799640,2cyclictest0-21swapper/109:17:261
214185799630,2cyclictest0-21swapper/109:20:061
2141857996243,17cyclictest2202368-21kworker/1:110:20:141
2141857996237,24cyclictest2233724-21kworker/1:111:45:161
214185799620,1cyclictest0-21swapper/108:37:551
2141857996158,2cyclictest0-21swapper/110:25:121
2141857996143,14cyclictest2212118-21kworker/1:011:00:361
2141857996058,1cyclictest0-21swapper/109:37:291
2141857995957,1cyclictest0-21swapper/111:26:221
2141857995957,1cyclictest0-21swapper/109:10:541
2141857995956,2cyclictest0-21swapper/112:16:281
2141857995956,2cyclictest0-21swapper/109:42:291
2141857995943,15cyclictest2212118-21kworker/1:010:41:091
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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