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2022-07-03 - 05:29

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 Sun Jul 03, 2022 00:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2475421270,2sleep3684-21dbus-daemon23:49:453
365721220,0sleep43660-21tty22:12:074
931021190,0sleep30-21swapper/321:38:553
1435121180,0sleep60-21swapper/600:10:086
160382990,0sleep40-21swapper/400:20:334
160382990,0sleep40-21swapper/400:20:334
258922940,0sleep30-21swapper/322:27:533
65292920,1sleep06512-21sshd23:13:190
65292920,1sleep06512-21sshd23:13:190
251382920,0sleep425139-21systemd-cgroups23:24:214
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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