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2022-10-04 - 01:51

x86 Intel Core i5-8365UE @1600 MHz, Linux 5.10.47-rt46 (Profile)

Latency plot of system in rack #8, slot #4
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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack8slot4.osadl.org (updated Sat Apr 02, 2022 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
latency7.value1404:00:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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