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2025-12-31 - 22:23
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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 rack8slot4.osadl.org (updated Wed Dec 31, 2025 12:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
35929812231176,18sleep10-21swapper/107:07:171
35929942229175,17sleep30-21swapper/307:07:273
35930192224168,19sleep00-21swapper/007:07:490
35950562221188,21sleep70-21swapper/707:09:177
35929002221168,42sleep60-21swapper/607:06:106
35950512213186,17sleep20-21swapper/207:09:112
35950352213185,18sleep40-21swapper/407:08:574
35928542212186,16sleep50-21swapper/507:05:295
359548299340,33cyclictest0-21swapper/209:35:012
359549499320,31cyclictest3617987-21latency_hist07:50:005
359548599320,31cyclictest3713569-21apt10:45:023
359548599320,30cyclictest3650829-21apt08:50:013
359548299320,31cyclictest3631441-21sh08:15:012
3595505993127,3cyclictest3710595-21sh10:40:017
359548099312,29cyclictest3762292-21apt12:15:011
3595505993028,1cyclictest3634797-21apt-get08:23:157
3595500993028,1cyclictest3684054-21apt-get09:53:146
3595500993028,1cyclictest3605143-21apt-get07:28:146
3595494993028,1cyclictest3767691-21sh12:25:015
3595494993028,1cyclictest3626713-21apt-get08:08:155
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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