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2026-03-11 - 18:16
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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 Wed Mar 11, 2026 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
322521400,6chrt3223-21grep10:10:350
1959210016,39sleep00-21swapper/007:08:320
183629833,19sleep10-21swapper/107:07:151
2274999037,47cyclictest8755-21apt-get12:00:120
2281998715,64cyclictest0-21swapper/109:20:121
2281998714,63cyclictest0-21swapper/111:50:141
2281998617,60cyclictest0-21swapper/110:20:121
2281998613,62cyclictest0-21swapper/109:55:121
228199856,67cyclictest31091-21apt-get10:00:101
2281998515,55cyclictest0-21swapper/107:35:231
2281998514,57cyclictest0-21swapper/108:40:141
228199847,61cyclictest9854-21apt-get07:30:111
228199846,24cyclictest2195-21apt-get10:10:121
2281998417,58cyclictest0-21swapper/112:10:131
2281998417,57cyclictest0-21swapper/110:15:111
2281998416,54cyclictest0-21swapper/111:40:141
2281998415,60cyclictest0-21swapper/108:05:151
2281998414,63cyclictest0-21swapper/109:05:151
227499845,51cyclictest0-21swapper/011:10:110
228199837,63cyclictest25286-21apt-get11:15:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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