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2025-11-05 - 01:56
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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 Nov 04, 2025 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
35012142266189,28sleep10-21swapper/107:07:371
35011332264188,27sleep00-21swapper/007:06:430
125899690,3rtkit-daemon1257-21rtkit-daemon07:30:291
36737442550,5sleep00-21swapper/011:47:280
36181372510,4sleep03618136-21seq10:35:200
125899460,3rtkit-daemon0-21swapper/112:31:421
35289022450,3sleep00-21swapper/008:15:170
125899450,3rtkit-daemon0-21swapper/107:47:581
36049572440,5sleep10-21swapper/110:17:551
125899420,3rtkit-daemon0-21swapper/109:48:501
35751492400,4sleep03575154-21cpuspeed_turbos09:40:160
37075392380,2sleep00-21swapper/012:31:010
36034192370,3sleep03603422-21switchtime10:15:240
3501555993733,2cyclictest3500097-21kworker/u8:207:20:211
125899370,7rtkit-daemon3512832-21df_inode07:35:160
350155599330,2cyclictest0-21swapper/112:10:161
3501547993115,10cyclictest3545288-21apt-get08:55:160
3501555992819,5cyclictest3698599-40apt-check12:20:181
3501547992825,2cyclictest63750irq/132-enp2s009:08:100
125899280,20rtkit-daemon3703901-21ssh12:25:411
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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