Re: GSOC Queries : Optimized logging of unchanging performance metrics

[Ken McDonell <kenj@xxxxxxxxxxxxxxxx>]

On 10/03/16 01:05, Martins Innus wrote:
> Hi Vineet,
>
>      Thanks for the interest in PCP!
> ...
G'day Vineet.

Further to Martins email, if you'd really like to understand the problem 
we're trying to find a better solution for here, ...
1. get a standard PCP installation working, preferably on a Linux system 
(does not matter what sort of Linux)
2. install the proc PMDA ... something like
        $ cd /var/lib/pcp/pmdas/proc
        $ sudo ./Install
3. then log some of the proc metrics (any or all of the proc.psinfo ones 
would be fine) for half a dozen 10 second samples ... make sure 
something in the background is doing the odd fork()
4. now inspect the .meta file that pmlogger created with pmdumplog

All sorts of creative data compression techniques are "in scope" here.