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2025-05-03 - 02:15
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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 rack5slot0.osadl.org (updated Sat May 03, 2025 00:44:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
69921860,1sleep1636399cyclictest00:03:221
645821490,3sleep31846-21nfsd00:10:253
1578921330,2sleep10-21swapper/122:28:221
98821320,2sleep2982-21cp23:00:552
132321210,1sleep20-21swapper/221:38:022
1546821180,1sleep00-21swapper/023:52:030
2007021140,4sleep1636399cyclictest00:05:151
2007021140,4sleep1636399cyclictest00:05:151
374921070,2sleep1636399cyclictest21:56:321
5903210434,41sleep10-21swapper/119:07:161
2671021040,0sleep00-21swapper/021:15:510
1972921040,2sleep10-21swapper/121:42:501
2108921000,5sleep3637399cyclictest21:12:203
319832970,1sleep031986-21id22:54:390
309092950,2sleep10-21swapper/100:39:221
199952940,2sleep219996-21bash22:10:192
181322940,2sleep118130-21bash23:46:031
316192930,1sleep30-21swapper/322:11:253
274832920,3sleep1636399cyclictest23:06:351
277172910,3sleep00-21swapper/023:03:320
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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