Re: [pcp] CPU metris in Percentage instead of millisec

[Nathan Scott <nathans@xxxxxxxxxx>]

Hi William,

----- Original Message -----
> I wanted to know if it was a way in Performance CO-Pilot to get the CPU
> metrics to get logged as Percentage instead of millisec. If it is possible
> where would I create this?

You probably want to use "derived metrics" in this situation - continue
logging metrics as counters, but later present them to the PCP tools as
new metrics where the values have been transformed into percentages.

This configuration file should do it:

cpu.percent.user = 100 * (kernel.all.cpu.user + kernel.all.cpu.nice) / hinv.ncpu
cpu.percent.sys = 100 * kernel.all.cpu.sys / hinv.ncpu
cpu.percent.idle = 100 * kernel.all.cpu.idle / hinv.ncpu
cpu.percent.wait = 100 * kernel.all.cpu.wait.total / hinv.ncpu
cpu.percent.steal = 100 * kernel.all.cpu.steal / hinv.ncpu

There's more details on the PCPIntro(1) man page, in the $PCP_DERIVED_CONFIG
section (under "ENVIRONMENT").

cheers.

--
Nathan