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2025-11-19 - 02:34
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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 18, 2025 12:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22216892280219,47sleep10-21swapper/107:06:081
22219842270187,29sleep00-21swapper/007:09:170
125899610,4rtkit-daemon1257-21rtkit-daemon10:57:340
125899600,3rtkit-daemon0-21swapper/111:25:041
23818362570,4sleep12381839-21cpuspeed_turbos11:35:151
125899570,4rtkit-daemon1257-21rtkit-daemon07:50:521
125899550,3rtkit-daemon0-21swapper/112:02:181
22775942540,4sleep00-21swapper/009:19:030
22294812530,5sleep10-21swapper/107:25:221
125899530,4rtkit-daemon1257-21rtkit-daemon08:42:451
125899520,4rtkit-daemon1257-21rtkit-daemon10:33:001
23547652500,7sleep10-21swapper/110:59:131
125899490,3rtkit-daemon0-21swapper/110:20:431
125899480,4rtkit-daemon1257-21rtkit-daemon11:46:021
125899480,3rtkit-daemon0-21swapper/108:11:111
125899480,10rtkit-daemon0-21swapper/107:49:581
125899470,3rtkit-daemon0-21swapper/111:50:411
125899450,3rtkit-daemon0-21swapper/107:42:041
125899450,3rtkit-daemon0-21swapper/010:48:011
125899440,3rtkit-daemon0-21swapper/110:51:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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