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2026-04-02 - 13:17
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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 Thu Apr 02, 2026 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36731272264186,28sleep00-21swapper/019:07:140
36732432258185,58sleep10-21swapper/119:08:281
179699640,4rtkit-daemon1795-21rtkit-daemon23:18:011
367352599633,38cyclictest3833606-21apt-get23:45:131
179699630,3rtkit-daemon1795-21rtkit-daemon21:35:241
36833972620,3sleep00-21swapper/019:30:180
179699570,4rtkit-daemon1795-21rtkit-daemon00:37:351
179699570,3rtkit-daemon1795-21rtkit-daemon23:35:310
37396522560,4sleep00-21swapper/021:31:280
367352299562,15cyclictest3688757-21apt-get19:45:140
367352299562,10cyclictest3713028-21apt-get20:45:130
179699550,4rtkit-daemon1795-21rtkit-daemon19:40:181
367352299541,13cyclictest3819557-21apt-get23:25:120
179699540,4rtkit-daemon1795-21rtkit-daemon22:03:091
179699540,3rtkit-daemon0-21swapper/023:02:100
179699540,3rtkit-daemon0-21swapper/023:02:100
179699530,3rtkit-daemon1795-21rtkit-daemon00:17:381
367352599522,6cyclictest3840539-21apt-get23:55:121
3673525995213,19cyclictest3818256-21sh23:22:221
367352299511,9cyclictest3698929-21apt-get20:10:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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