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2024-11-22 - 09:57
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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 10 highest latencies:
System rackfslot7.osadl.org (updated Fri Nov 22, 2024 00:46:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2202019997436,19cyclictest16-21ksoftirqd/019:25:150
2202019997416,20cyclictest2243271-21sort20:20:220
2202019997213,40cyclictest2327419-21sed22:50:310
2202019996547,18cyclictest0-21swapper/020:36:010
2202026996426,38cyclictest2358845-21switchtime23:50:197
220201999570,17cyclictest0-21swapper/021:54:290
2202026995618,19cyclictest2253740-21if_err_eno220:40:157
220202299560,17cyclictest0-21swapper/323:15:153
2202019995618,38cyclictest0-21swapper/021:13:280
2202026995515,39cyclictest0-21swapper/720:57:107
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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