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2026-08-26 - 06:16
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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 Aug 26, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1974869996961,5cyclictest2063269-21fschecks_count22:05:151
197486999670,65cyclictest0-21swapper/123:10:001
1974869996239,21cyclictest2101052-21kworker/1:122:50:151
1974869996146,14cyclictest2074205-21kworker/1:022:20:111
1974869996145,15cyclictest1992475-21kworker/1:220:05:001
1974869996144,16cyclictest2046330-21kworker/1:022:00:181
1974869996134,26cyclictest1998641-21kworker/1:120:30:151
1974869996043,16cyclictest1971907-21kworker/1:219:40:181
1974869996043,15cyclictest3834693-1kworker/1:1H20:35:151
1974869995944,14cyclictest2078894-21kworker/1:122:25:161
1974869995944,14cyclictest2048996-21kworker/1:221:50:071
1974869995944,14cyclictest1971907-21kworker/1:219:30:441
1974869995943,15cyclictest1998641-21kworker/1:120:28:051
1974869995943,15cyclictest1986044-21kworker/1:119:59:371
1974869995943,15cyclictest1986044-21kworker/1:119:53:361
1974869995943,15cyclictest1971907-21kworker/1:219:20:391
1974869995942,15cyclictest3834693-1kworker/1:1H20:00:141
1974869995933,25cyclictest1998641-21kworker/1:120:25:011
1974869995854,2cyclictest0-21swapper/120:40:561
1974869995845,11cyclictest0-21swapper/123:50:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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