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2026-07-27 - 02:08
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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 Sun Jul 26, 2026 12:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
34579902227165,19sleep50-21swapper/507:09:095
34579792227166,19sleep30-21swapper/307:08:593
34580112214185,19sleep60-21swapper/607:09:276
34579962214184,20sleep00-21swapper/007:09:120
34577252207178,19sleep20-21swapper/207:05:202
34578822206177,20sleep10-21swapper/107:07:371
34577482202172,19sleep70-21swapper/707:05:417
34577362201172,19sleep40-21swapper/407:05:314
345939699350,31cyclictest3505530-21apt-get08:34:563
345939099350,1cyclictest0-21swapper/108:25:011
345939099350,1cyclictest0-21swapper/108:25:011
345939699330,28cyclictest0-21swapper/309:54:553
345939699330,28cyclictest0-21swapper/309:49:553
345939099330,33cyclictest3498488-21cron08:20:011
345939099330,33cyclictest3498488-21cron08:20:011
345939099330,1cyclictest0-21swapper/108:14:551
3459396993225,4cyclictest0-21swapper/311:50:013
3459396993225,4cyclictest0-21swapper/311:50:013
345939099320,4cyclictest1-21systemd07:35:011
345938799320,31cyclictest1-21systemd12:35:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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