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2025-12-21 - 12:38
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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 Dec 21, 2025 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
571992997237,34cyclictest636169-21kworker/1:222:45:151
57199299640,2cyclictest629731-21kworker/1:122:18:081
57199299640,2cyclictest0-21swapper/120:07:431
57199299640,2cyclictest0-21swapper/120:07:431
57199299630,61cyclictest0-21swapper/119:59:411
571999996143,15cyclictest2642961-1kworker/3:1H20:00:013
571992996140,19cyclictest672842-21kworker/1:200:35:141
571992996139,20cyclictest2578189-1kworker/1:1H21:15:001
571992996056,2cyclictest0-21swapper/122:36:211
571992996041,17cyclictest645929-21kworker/1:123:15:141
571992996040,18cyclictest622676-21kworker/1:322:10:151
571992995942,15cyclictest609669-21kworker/1:121:15:151
571992995842,15cyclictest640787-21kworker/1:122:50:161
571992995841,16cyclictest661349-21kworker/1:100:00:001
571992995841,15cyclictest655180-21kworker/1:023:35:171
57199999571,23cyclictest2698727-21kworker/3:119:46:103
571992995744,12cyclictest26350irq/16-i801_smb00:13:411
571992995742,14cyclictest636169-21kworker/1:222:40:141
571992995742,14cyclictest597088-21kworker/1:220:32:531
571992995741,15cyclictest597088-21kworker/1:220:36:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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