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2025-08-21 - 22:13
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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 rack0slot7.osadl.org (updated Thu Aug 21, 2025 00:46:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
37296589948651,431cyclictest0-21swapper/023:28:370
37296589948450,431cyclictest0-21swapper/023:52:430
37296589948423,458cyclictest0-21swapper/000:27:370
37296589947820,27cyclictest0-21swapper/019:24:380
37296589945824,27cyclictest0-21swapper/022:08:590
37296589945822,432cyclictest0-21swapper/022:01:380
37297129945622,433cyclictest0-21swapper/1522:13:387
37296589945523,28cyclictest17-21ksoftirqd/023:55:420
37296589945520,431cyclictest0-21swapper/022:52:370
37297129945421,28cyclictest0-21swapper/1521:53:357
37297129945321,431cyclictest0-21swapper/1520:57:377
37297129945321,28cyclictest0-21swapper/1519:45:387
37296589945320,28cyclictest0-21swapper/023:39:370
37297129945220,28cyclictest0-21swapper/1522:46:357
37297129945119,28cyclictest0-21swapper/1521:57:377
37297129945119,28cyclictest0-21swapper/1520:01:597
37296689944817,28cyclictest0-21swapper/319:39:279
37297079944723,28cyclictest0-21swapper/1422:45:596
37297129944311,28cyclictest0-21swapper/1500:21:597
3729712994429,28cyclictest0-21swapper/1520:31:597
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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