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2026-08-26 - 15:02
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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 rack1slot3.osadl.org (updated Wed Aug 26, 2026 12:43:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1060731991311,1cyclictest0-21swapper/308:50:133
106073199130,12cyclictest0-21swapper/311:55:113
106073199130,11cyclictest0-21swapper/309:10:113
1060731991210,1cyclictest0-21swapper/311:30:023
106073199120,1cyclictest0-21swapper/311:20:133
106073199120,11cyclictest0-21swapper/310:40:113
106073199120,11cyclictest0-21swapper/309:20:123
106073199120,11cyclictest0-21swapper/308:20:113
106073199120,0cyclictest0-21swapper/307:20:123
1060731991111,0cyclictest0-21swapper/312:30:123
1060731991111,0cyclictest0-21swapper/312:15:023
1060731991111,0cyclictest0-21swapper/308:15:123
1060731991111,0cyclictest0-21swapper/307:25:103
1060731991110,0cyclictest0-21swapper/312:20:163
1060731991110,0cyclictest0-21swapper/310:30:123
1060731991110,0cyclictest0-21swapper/309:45:133
106073199110,10cyclictest0-21swapper/311:00:013
106073199110,10cyclictest0-21swapper/309:30:013
106073199110,10cyclictest0-21swapper/308:35:153
106073199110,10cyclictest0-21swapper/307:15:183
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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