Re: limiting CPU usage
Re: limiting CPU usage
- Subject: Re: limiting CPU usage
- From: "Gammah Radiation" <email@hidden>
- Date: Fri, 30 Nov 2007 11:00:48 -0600
I think the correct API to use would be the BSD setpriority() call,
which is similar to nice-ing a process. This would not limit the CPU
usage your daemon would see to always less than some percentage, but
would make sure that it's priority is lower than other processes in
the system.
I suppose the very hackerish way would be to sleep between images, but
that seems kinda dumb.
On Nov 30, 2007 10:36 AM, Alexander Cohen <email@hidden> wrote:
>
> On 30-Nov-07, at 9:41 AM, Thomas Davie wrote:
>
> >
> > On 30 Nov 2007, at 13:53, Alexander Cohen wrote:
> >
> >> Is it possible to limit an apps CPU usage to under a certain
> >> percentage using cocoa?
> >
> > Someone may want to correct me, but I'm pretty sure that that goes
> > against the way the scheduler works -- if there's spare CPU and
> > something can use it, it will give it.
> >
> > What you can do, is use nice to lower your priority in the scheduler.
>
> In that case, maybe you have an idea for me. I have a daemon that runs
> and indexes all the images on a system. For each image, it needs to
> open it up, get some info, close it and store that info. This is very
> CPU consuming and can pretty much bring the system to a halt after a
> while.
>
> thanks
>
> AC
>
>
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