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2025-02-08 - 17:04
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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 rackbslot1.osadl.org (updated Sat Feb 08, 2025 12:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12436832211152,19sleep20-21swapper/207:09:422
12436832211152,19sleep20-21swapper/207:09:422
12434272207185,13sleep10-21swapper/107:06:241
12434272207185,13sleep10-21swapper/107:06:241
12435342205182,14sleep00-21swapper/007:07:440
12435342205182,14sleep00-21swapper/007:07:440
12399012202153,15sleep30-21swapper/307:05:063
12399012202153,15sleep30-21swapper/307:05:063
131357721120,1sleep20-21swapper/208:28:132
1244066999981,15cyclictest3606026-21chrome08:45:011
124406699980,95cyclictest1425988-21chrome10:45:011
1244077999579,14cyclictest3605905-21python308:45:013
124407799675,59cyclictest1378368-21chrome09:45:023
124406699679,56cyclictest3606026-21chrome09:45:021
13966832640,2sleep11396691-21munin-node10:10:011
1244077996359,3cyclictest1428357-21kworker/u8:0+events_unbound11:00:303
1244066996257,4cyclictest1378571-21kworker/u8:3+events_unbound10:20:001
1244077996152,2cyclictest1192225-21kworker/u8:2+flush-179:007:25:183
1244070996156,3cyclictest1381052-21/usr/share/muni09:50:192
1244077995654,2cyclictest1301976-21kworker/u8:4+flush-179:008:15:223
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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