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2024-04-25 - 07:49
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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 Thu Apr 25, 2024 00:48:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
212669917937,113cyclictest0-21swapper/100:30:411
212669917438,135cyclictest22-21ksoftirqd/122:43:161
212669917438,135cyclictest22-21ksoftirqd/122:43:161
212669916924,124cyclictest0-21swapper/122:17:541
212669916924,124cyclictest0-21swapper/122:17:541
214729916734,132cyclictest0-21swapper/3123:11:0025
214729916734,132cyclictest0-21swapper/3123:11:0025
214729916733,104cyclictest0-21swapper/3122:46:5725
214729916733,104cyclictest0-21swapper/3122:46:5725
212669915817,137cyclictest0-21swapper/123:34:531
212669915817,137cyclictest0-21swapper/123:34:521
213349915626,128cyclictest0-21swapper/1322:04:585
213349915426,100cyclictest0-21swapper/1323:49:265
213349915426,100cyclictest0-21swapper/1323:49:265
213349915326,106cyclictest0-21swapper/1322:27:245
212789915370,82cyclictest0-21swapper/300:15:4423
213349915224,105cyclictest0-21swapper/1300:19:095
213349915126,87cyclictest0-21swapper/1300:00:445
21311991431,84cyclictest0-21swapper/822:45:1830
21311991431,84cyclictest0-21swapper/822:45:1830
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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