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2025-11-26 - 08:49
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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 Wed Nov 26, 2025 00:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10013962269193,27sleep10-21swapper/119:09:581
10011032265186,28sleep00-21swapper/019:06:500
11141462590,2sleep10-21swapper/122:39:331
10895802540,3sleep10-21swapper/122:05:011
125899500,5rtkit-daemon1257-21rtkit-daemon00:32:290
11327412500,3sleep11132697-21sh23:05:211
1001500994610,8cyclictest26-21ksoftirqd/123:40:011
125899450,3rtkit-daemon0-21swapper/122:13:481
125899450,3rtkit-daemon0-21swapper/120:58:441
125899440,4rtkit-daemon1074754-21ssh21:43:301
125899440,4rtkit-daemon1074754-21ssh21:43:291
125899440,3rtkit-daemon0-21swapper/120:29:001
125899430,3rtkit-daemon0-21swapper/122:08:121
125899430,3rtkit-daemon0-21swapper/121:16:401
125899420,3rtkit-daemon0-21swapper/123:44:441
125899420,3rtkit-daemon0-21swapper/122:19:261
125899420,3rtkit-daemon0-21swapper/121:05:421
100149599420,14cyclictest1050197-40apt-check21:10:270
125899410,3rtkit-daemon0-21swapper/121:52:061
125899410,3rtkit-daemon0-21swapper/120:37:491
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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