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2026-05-05 - 12:52
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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 rack3slot6.osadl.org (updated Tue May 05, 2026 00:45:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15112210032,19sleep10-21swapper/119:05:071
16897999118,17cyclictest0-21swapper/122:35:101
16897999116,64cyclictest0-21swapper/119:50:131
1689799886,20cyclictest2337-21apt-get23:00:161
16897998814,17cyclictest0-21swapper/122:10:141
16897998814,17cyclictest0-21swapper/122:10:141
16897998814,16cyclictest0-21swapper/121:05:151
1689799877,25cyclictest27728-21apt-get21:10:141
1689799877,25cyclictest27728-21apt-get21:10:141
1689799877,25cyclictest19510-21apt-get19:15:151
16897998715,17cyclictest0-21swapper/119:25:221
16897998714,17cyclictest0-21swapper/121:30:221
1689199876,26cyclictest29520-21apt-get22:45:130
1689199876,26cyclictest29520-21apt-get22:45:130
1689799866,19cyclictest6686-21apt-get20:10:121
16897998614,16cyclictest0-21swapper/123:05:151
16897998614,16cyclictest0-21swapper/123:05:151
1689199866,24cyclictest6440-21apt-get21:40:120
1689799857,21cyclictest26791-21apt-get19:35:141
1689199855,17cyclictest31231-21apt-get21:20:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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