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2025-05-03 - 01:14
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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 Fri May 02, 2025 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24730612322278,29sleep00-21swapper/007:09:500
24729042317282,20sleep10-21swapper/107:08:081
247321399188182,4cyclictest2631900-21kworker/u8:011:42:210
25835702710,13sleep126-21ksoftirqd/110:31:051
24880572580,4sleep10-21swapper/107:45:221
25271132570,4sleep00-21swapper/009:16:100
125899470,8rtkit-daemon0-21swapper/108:53:261
125899430,3rtkit-daemon0-21swapper/109:49:061
125899420,3rtkit-daemon0-21swapper/111:00:351
125899420,3rtkit-daemon0-21swapper/108:56:001
125899410,3rtkit-daemon0-21swapper/111:18:341
125899410,3rtkit-daemon0-21swapper/108:36:131
125899400,3rtkit-daemon0-21swapper/107:19:311
125899360,4rtkit-daemon2648016-21ssh11:57:340
26441672330,2sleep10-21swapper/111:52:311
2473217993019,5cyclictest2497846-40apt-check08:10:251
2473213993014,9cyclictest2585665-21apt-get10:35:160
125899300,8rtkit-daemon2666637-21ssh12:22:530
247321799283,20cyclictest2589431-21apt-get10:40:161
2473217992812,9cyclictest2540421-21apt-get09:35:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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