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2025-11-24 - 22:41
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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
Characteristics of the 20 highest latencies:
System rackeslot2.osadl.org (updated Mon Nov 24, 2025 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
233772621200,1sleep00-21swapper/010:00:320
233772621200,1sleep00-21swapper/010:00:320
25130692960,2sleep30-21swapper/311:40:343
21528212250,2sleep20-21swapper/207:50:332
2096520992514,7cyclictest2564426-21kthreadcore12:10:320
209652099251,17cyclictest2472714-21cat11:20:010
209652099247,11cyclictest0-21swapper/012:20:210
2096520992419,4cyclictest2245761-21sh09:10:010
2096520992414,6cyclictest2434154-21grep10:55:320
2096520992414,6cyclictest2343640-21kthreadcore10:05:310
209652099240,22cyclictest170550irq/121-eno112:35:230
209652099237,11cyclictest0-21swapper/010:25:220
2096520992313,8cyclictest0-21swapper/011:55:020
209652099229,8cyclictest0-21swapper/011:05:310
2096520992219,2cyclictest2184399-21apt-get08:20:020
2096520992216,5cyclictest2289777-21grep09:35:010
2096520992214,4cyclictest0-21swapper/011:25:000
2096520992210,8cyclictest2272589-21tail09:25:240
22290852210,2sleep20-21swapper/208:55:292
2096528992118,1cyclictest0-21swapper/209:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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