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
>
> 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 has been very heavily tested. I find in most of my networking
benchmarks on 4-way / 8-way machines it reduces cpu utilization by
1/3rd for a given level of throughput. Your mileage will of course
vary.

 -Kip