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2026-09-14 - 04:23
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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 rack3slot6.osadl.org (updated Mon Sep 14, 2026 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24194211131,68sleep00-21swapper/019:05:130
109222830,8chrt0-21swapper/000:30:320
62962820,5sleep10-21swapper/100:17:011
2479127938,25sleep10-21swapper/119:05:241
25944997835,39cyclictest26-21ksoftirqd/122:10:211
25937997755,13cyclictest0-21swapper/022:30:190
25937997556,13cyclictest0-21swapper/000:00:180
25944997451,8cyclictest26-21ksoftirqd/119:10:351
25944997344,15cyclictest10552-21/usr/sbin/munin00:30:441
25937997345,15cyclictest0-21swapper/022:35:150
25937997314,17cyclictest0-21swapper/000:35:170
352527229,23sleep00-21swapper/022:40:170
25944997132,33cyclictest26-21ksoftirqd/120:15:351
25937997151,11cyclictest14-21ksoftirqd/020:05:140
25937997125,31cyclictest14-21ksoftirqd/019:53:560
25937997052,12cyclictest0-21swapper/021:30:150
25937997041,17cyclictest0-21swapper/022:50:130
25937997038,27cyclictest7966-21telnet21:20:190
25937997025,30cyclictest14-21ksoftirqd/021:28:150
25937996815,47cyclictest0-21swapper/019:55:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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