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2023-09-26 - 13:51
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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: ondemand
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack8slot7.osadl.org (updated Tue Sep 26, 2023 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2006992320,2cyclictest27882-21x2golistsession21:28:160
200799220,21cyclictest0-21swapper/119:29:161
200799210,20cyclictest0-21swapper/123:25:061
2006992120,1cyclictest0-21swapper/000:33:360
200699210,1cyclictest0-21swapper/022:41:150
2007992017,2cyclictest601-21irqbalance00:05:251
200799200,19cyclictest0-21swapper/122:59:251
2006991918,1cyclictest0-21swapper/023:37:550
2007991716,1cyclictest0-21swapper/121:13:261
2006991514,1cyclictest0-21swapper/021:57:550
2006991312,1cyclictest0-21swapper/021:32:150
200799129,2cyclictest6720-21x2golistsession00:13:161
200799121,4cyclictest30933-21x2golistsession21:56:041
200799121,2cyclictest19790-21x2golistsession22:13:571
200699128,2cyclictest5162-21x2golistsession00:11:360
200699123,4cyclictest141rcu_preempt22:05:260
200699122,8cyclictest17740-21x2gosqlitewrapp00:21:400
200699121,9cyclictest12308-21x2gosqlitewrapp23:00:100
200799117,2cyclictest31012-21x2gosqlitewrapp22:22:421
200799112,3cyclictest627-21nscd20:27:051
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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