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2023-02-06 - 08:07

x86 Intel Core i3-2100T @2500 MHz, Linux 4.14.28-rt23 (Profile)

Latency plot of system in rack #0, slot #0
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 --smi -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 rack0slot0.osadl.org (updated Mon Feb 06, 2023 00:45:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2587621710,4sleep61655299cyclictest23:16:506
1560521710,4sleep11652299cyclictest23:03:381
392121640,1sleep03920-21grepconf.sh23:28:540
392121640,1sleep03920-21grepconf.sh23:28:540
3031621550,0sleep10-21swapper/123:07:391
520721420,1sleep11652299cyclictest23:39:301
520721420,1sleep11652299cyclictest23:39:301
38521360,0sleep20-21swapper/222:53:442
2211921270,0sleep00-21swapper/022:07:560
1213821260,0sleep00-21swapper/021:59:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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