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2025-11-05 - 01:07
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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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack3slot6.osadl.org (updated Tue Nov 04, 2025 12:45:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
223042930,6sleep122301-21munin-run10:29:591
1456629219,26sleep00-21swapper/007:07:350
229862850,3sleep10-21swapper/110:30:291
180312850,6sleep018029-21grep07:15:280
301132800,10sleep014-21ksoftirqd/010:50:290
14978997951,15cyclictest14-21ksoftirqd/008:35:150
14978997758,10cyclictest14-21ksoftirqd/009:05:160
14978997752,16cyclictest14-21ksoftirqd/011:10:140
14978997647,16cyclictest14-21ksoftirqd/010:35:190
14978997549,15cyclictest14-21ksoftirqd/012:15:160
14978997447,16cyclictest14-21ksoftirqd/012:25:170
14978997248,15cyclictest14-21ksoftirqd/011:00:230
1477727222,39sleep10-21swapper/107:09:211
14978997147,15cyclictest14-21ksoftirqd/007:30:130
14978997142,19cyclictest14-21ksoftirqd/009:20:140
14978997138,27cyclictest504-21snmpd10:09:100
14978997112,17cyclictest0-21swapper/008:45:150
14978997111,53cyclictest36-21kcompactd012:00:120
14978996942,18cyclictest31825-21seq09:25:160
14978996942,18cyclictest14-21ksoftirqd/010:25:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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