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2026-08-15 - 02:08
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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 Sat Aug 15, 2026 00:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
859828241,25sleep10-21swapper/119:05:151
10210997455,12cyclictest26-21ksoftirqd/100:15:121
10210997455,12cyclictest26-21ksoftirqd/100:15:121
10206997336,31cyclictest14-21ksoftirqd/000:00:380
10210997249,9cyclictest26-21ksoftirqd/100:10:341
10206997245,22cyclictest14-21ksoftirqd/022:35:310
975627119,41sleep00-21swapper/019:07:060
10206997035,30cyclictest14-21ksoftirqd/021:40:320
10206996839,15cyclictest14-21ksoftirqd/021:36:070
10206996832,31cyclictest14-21ksoftirqd/019:46:060
10206996830,30cyclictest14-21ksoftirqd/019:55:010
10206996829,16cyclictest14-21ksoftirqd/023:45:010
10210996743,9cyclictest26-21ksoftirqd/100:25:231
10206996744,10cyclictest14-21ksoftirqd/021:15:360
10206996732,30cyclictest14-21ksoftirqd/020:15:210
10206996731,30cyclictest14-21ksoftirqd/022:50:110
10210996630,21cyclictest26-21ksoftirqd/122:00:171
10206996630,31cyclictest14-21ksoftirqd/023:26:510
10206996630,31cyclictest14-21ksoftirqd/020:05:260
10210996542,8cyclictest26-21ksoftirqd/122:30:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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