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2026-03-24 - 08:46
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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 rackcslot4.osadl.org (updated Tue Mar 24, 2026 00:44:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
37326002269226,28sleep10-21swapper/119:05:341
37312542269188,27sleep00-21swapper/019:05:050
39207472520,3sleep0161rcuc/000:24:100
38146592510,3sleep03814162-21/usr/sbin/munin21:55:170
179699500,4rtkit-daemon1795-21rtkit-daemon20:23:211
179699490,4rtkit-daemon1795-21rtkit-daemon23:21:240
179699490,4rtkit-daemon1795-21rtkit-daemon20:02:061
179699460,3rtkit-daemon1795-21rtkit-daemon22:17:080
37934782440,2chrt3793479-21sh21:25:231
3733138994117,4cyclictest13-21ksoftirqd/023:35:000
179699410,5rtkit-daemon3879318-21apt-get23:25:121
37998802400,1sleep00-21swapper/021:35:020
37377832400,3sleep13737977-21df19:20:151
3733138994011,4cyclictest13-21ksoftirqd/023:35:220
179699400,3rtkit-daemon0-21swapper/100:20:251
179699380,3rtkit-daemon0-21swapper/120:31:521
3733138993710,4cyclictest13-21ksoftirqd/019:55:000
179699370,3rtkit-daemon0-21swapper/019:16:120
179699360,4rtkit-daemon1795-21rtkit-daemon00:36:470
179699360,3rtkit-daemon0-21swapper/121:21:491
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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