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2026-09-04 - 07:15
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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 Fri Sep 04, 2026 00:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3797210028,19sleep10-21swapper/119:07:401
4204999645,33cyclictest26-21ksoftirqd/100:25:121
269229338,39sleep00-21swapper/019:05:170
98592820,13sleep09862-21missed_timers23:55:280
298852800,4sleep10-21swapper/120:20:011
4204997924,16cyclictest503-21snmpd21:36:531
4204997916,12cyclictest0-21swapper/120:50:301
120582790,7chrt0-21swapper/022:30:350
4204997821,18cyclictest19645-21seq19:50:341
4204997740,27cyclictest26-21ksoftirqd/100:30:161
4198997655,11cyclictest14-21ksoftirqd/019:30:150
420499759,10cyclictest0-21swapper/123:30:351
4204997516,52cyclictest0-21swapper/100:05:201
4204997426,14cyclictest15163-21cat22:40:201
4204997420,20cyclictest457-21dbus-daemon23:05:001
4204997323,16cyclictest20710-21seq19:55:191
4204997213,20cyclictest26-21ksoftirqd/121:25:351
4198997255,10cyclictest14-21ksoftirqd/021:35:120
4204997134,8cyclictest26-21ksoftirqd/123:28:391
4198997146,13cyclictest14-21ksoftirqd/021:44:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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