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2026-03-30 - 08:10
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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 Mon Mar 30, 2026 00:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30950991187,90cyclictest0-21swapper/022:45:250
30950991187,90cyclictest0-21swapper/022:45:240
309509911110,81cyclictest0-21swapper/019:15:120
30950991077,82cyclictest0-21swapper/023:10:110
309579910515,24cyclictest0-21swapper/120:35:241
309579910513,28cyclictest0-21swapper/100:00:121
309579910513,27cyclictest0-21swapper/120:30:141
30950991056,77cyclictest0-21swapper/023:45:110
30950991046,76cyclictest0-21swapper/020:40:130
30950991046,75cyclictest0-21swapper/022:05:120
30950991045,89cyclictest20768-21apt-get20:10:120
30950991037,74cyclictest0-21swapper/019:45:160
309579910236,22cyclictest26-21ksoftirqd/120:10:131
30950991027,76cyclictest0-21swapper/020:35:250
30950991026,74cyclictest0-21swapper/000:05:130
309509910210,73cyclictest0-21swapper/020:55:130
30950991016,76cyclictest0-21swapper/020:00:120
309509910110,70cyclictest0-21swapper/021:15:130
309579910014,26cyclictest0-21swapper/119:10:121
309579910013,28cyclictest0-21swapper/120:05:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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