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2025-09-13 - 10:09
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Data to construct the above plot have been generated using the RT test utility cyclictest.

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 10 highest latencies:
System rack2slot7.osadl.org (updated Sat Sep 13, 2025 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
264740299482,6cyclictest2736343-21ntpq23:32:300
264740299437,34cyclictest0-21swapper/000:06:490
264740299351,26cyclictest2773903-21run-parts00:44:570
264740299344,4cyclictest171rcu_preempt22:27:290
264740499326,3cyclictest2664910-21ntpq20:07:302
2647402993126,3cyclictest2758613-21sed00:14:570
2647402993123,4cyclictest0-21swapper/020:07:270
2647402993011,6cyclictest2717806-21sendmail-msp22:45:140
2647402992817,9cyclictest2763911-21sendmail-msp00:25:260
264740299262,14cyclictest2702217-21wc21:57:310
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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