[TEST/REVIEW] CPU accounting patches

Alexander Leidinger Alexander at Leidinger.net
Wed Jan 25 02:52:49 PST 2006

Poul-Henning Kamp <phk at phk.freebsd.dk> wrote:

> In message <20060125110927.dabpg50ls8o8gg4k at netchild.homeip.net>, 
> Alexander Lei
> dinger writes:
>> Are you going to fix those issues for machines which do power saving tricks
>> (which may even be useful on servers for some people, not only on laptops),
>> or do you not intend to further work on this besides the patches you present
>> here?
> My plan is to add some code to measure and record the maximum "cpu_tick"
> frequency we see, and use that to normalize the cpu accounting.
> That way, the user/system time reported will get units of "cpu seconds
> if the cpu ran full speed".

How large do you expect the error will be?


http://www.Leidinger.net  Alexander @ Leidinger.net: PGP ID = B0063FE7
http://www.FreeBSD.org     netchild @ FreeBSD.org  : PGP ID = 72077137
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