Re: Scheduler selection for web hosting

On 10/4/07, Artem Kuchin <matrix_at_itlegion.ru> wrote:
> Hello!
>
> I have read that in 7-Current there are two schedulers.
> 4BSD - which, AFAIK, is a renamed new SMP scheduler, but i'm not sure
> ULE

According to the scheduler team the only reason why ULE is not the
standard scheduler is it has poor performance on single processor
machines.

>
> 7-current amd64 is actually seems to be VERY stable on hardware and
> software we use, so, we want to move it to production servers and
> want to get max perfomance from it for web hosting.
>
> As, as i know, scheduler is a very important thing when i comes to
> perfomance in havy loaded really multitasking system. We are having
> about 900 processes in about 20 jails.
>
> So, what is the difference between the two? Which seems to be better
> for hosting? Is ULE bugfree and stable enogh for this?

ULE no question given your config... also from here on out I think it
is the only one under active development and a high experimental
version was tested last night and likelly to be further refined that
should really fly on such enviroments.