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2026-04-23 - 17:51
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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 Thu Apr 23, 2026 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11705210533,24sleep10-21swapper/107:06:541
11674210216,40sleep00-21swapper/007:06:340
1218399999,71cyclictest0-21swapper/011:15:290
1218399976,72cyclictest0-21swapper/007:50:140
1218399967,70cyclictest0-21swapper/007:25:110
1218399966,71cyclictest0-21swapper/007:35:110
1218399947,66cyclictest0-21swapper/008:15:130
1218399946,68cyclictest0-21swapper/012:35:110
12190999315,64cyclictest0-21swapper/108:05:111
1218399939,64cyclictest0-21swapper/008:25:120
1218399926,66cyclictest0-21swapper/010:30:110
1218399926,66cyclictest0-21swapper/009:55:120
1218399917,66cyclictest0-21swapper/010:20:110
1218399913,61cyclictest30312-21latency_hist09:30:010
1218399907,66cyclictest0-21swapper/009:35:110
1218399907,60cyclictest0-21swapper/009:45:320
1218399906,68cyclictest0-21swapper/010:00:120
1218399903,63cyclictest13988-21cut07:15:020
1218399902,63cyclictest7536-21http11:30:010
12183999022,44cyclictest31172-21ls11:05:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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