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2026-03-15 - 18:08
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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
Characteristics of the 20 highest latencies:
System rackdslot3.osadl.org (updated Sun Mar 15, 2026 12:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2420222160,3sleep324197-21od07:09:053
597922070,5sleep25978-21expr07:08:492
61312200167,22sleep00-21swapper/007:07:110
58932197164,22sleep10-21swapper/107:05:391
850921800,6sleep11342199cyclictest07:11:141
233721760,4sleep21342399cyclictest10:25:252
3068821410,6sleep11342199cyclictest08:05:111
1341699709,10cyclictest28359-21sort07:10:580
13423996833,6cyclictest33-21ksoftirqd/207:30:002
50512670,4sleep35058-21od07:12:443
13423996628,4cyclictest33-21ksoftirqd/207:55:192
225462640,6sleep31342499cyclictest08:55:123
13423996330,5cyclictest33-21ksoftirqd/207:10:272
13423996329,4cyclictest33-21ksoftirqd/208:30:002
1341699636,16cyclictest20164-21/usr/sbin/munin08:50:150
13423996229,10cyclictest33-21ksoftirqd/209:15:002
1341699629,10cyclictest18247-21sed09:50:250
1341699624,17cyclictest0-21swapper/010:35:000
13423996130,4cyclictest33-21ksoftirqd/208:45:002
13423996127,10cyclictest33-21ksoftirqd/211:40:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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