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2023-12-04 - 14:29
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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 rackcslot8.osadl.org (updated Mon Dec 04, 2023 00:49:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2279911980,186ptp4l0-21swapper/119:05:261
310899918211,77cyclictest0-21swapper/2623:57:3819
309279917146,79cyclictest0-21swapper/523:16:5027
311229916718,109cyclictest0-21swapper/3100:06:4825
311229915618,88cyclictest0-21swapper/3123:53:2525
311229915118,82cyclictest0-21swapper/3122:35:2425
311229915118,36cyclictest0-21swapper/3120:35:4125
311229915118,103cyclictest0-21swapper/3121:35:0125
309279915121,129cyclictest0-21swapper/522:20:1727
309279914824,81cyclictest0-21swapper/523:35:2127
30994991440,89cyclictest0-21swapper/1323:49:075
30935991440,86cyclictest0-21swapper/622:38:1128
311229914318,108cyclictest0-21swapper/3119:45:2925
311229914318,108cyclictest0-21swapper/3119:45:2825
30898991420,86cyclictest0-21swapper/022:55:280
311229914116,104cyclictest0-21swapper/3119:54:1925
311229914116,104cyclictest0-21swapper/3119:54:1825
311229914018,69cyclictest0-21swapper/3121:51:3425
30935991400,84cyclictest0-21swapper/622:40:5228
308989914047,56cyclictest0-21swapper/023:00:520
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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