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2026-01-01 - 16:35
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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 Thu Jan 01, 2026 12:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
46442203170,22sleep20-21swapper/207:09:472
46012198165,22sleep30-21swapper/307:09:173
46402196163,22sleep00-21swapper/007:09:450
45992196163,22sleep10-21swapper/107:09:151
139391450,0ptp4l401ktimersoftd/310:40:223
139391440,0ptp4l401ktimersoftd/310:09:433
139391420,0ptp4l401ktimersoftd/312:24:153
139391420,0ptp4l401ktimersoftd/310:25:113
139391420,0ptp4l401ktimersoftd/309:26:403
139391420,0ptp4l401ktimersoftd/309:20:273
139391400,2ptp4l401ktimersoftd/307:43:503
139391400,0ptp4l401ktimersoftd/307:20:293
57898390,7rtkit-daemon0-21swapper/107:27:231
4958993933,3cyclictest9-21ksoftirqd/009:10:000
4960993833,3cyclictest33-21ksoftirqd/209:15:262
4959993831,4cyclictest25-21ksoftirqd/107:40:101
139391380,18ptp4l17032-21/usr/sbin/munin12:05:243
57898370,7rtkit-daemon0-21swapper/008:51:480
57898370,7rtkit-daemon0-21swapper/008:26:530
4961993731,4cyclictest41-21ksoftirqd/312:32:523
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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