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2022-01-23 - 09:53

Intel(R) Core(TM) i7 CPU X 990 @ 3.47GHz, Linux 4.9.47-rt37 (Profile)

Latency plot of system in rack #c, slot #1
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 10 highest latencies:
System rackcslot1.osadl.org (updated Sun Jan 23, 2022 00:48:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
395499970,91rtkit-daemon0-21swapper/819:07:2110
2838028373,7sleep90-21swapper/919:08:1311
2599928273,6sleep10-21swapper/119:05:041
206552780,1sleep80-21swapper/821:25:1710
2838927554,6sleep50-21swapper/519:08:207
2828427553,7sleep110-21swapper/1119:06:503
2600327161,7sleep30-21swapper/319:05:055
2838827058,8sleep40-21swapper/419:08:206
73902680,0sleep00-21swapper/019:25:170
2822026856,8sleep70-21swapper/719:05:589
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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