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Re: [Xen-users] DNS servers as guests?



(Sorry Mike, my mail was intended for the list and more specifically the 
original poster, but you got it by accident). So here it is again on the list.

I don't have this setup, but if I were you, I would test via another tool as 
well, just to see the slowness is not in part due to Firefox as well.

Try the dig command for example (if you have a linux client). You could even 
add a time command in front of it to get a more precise idea of how long the 
command took, like 'time dig <yourdomain>'

With dig you can also do more detailed tests, to verify if it is really your 
DNS server doing the resolution.

Hth,

Geert

On Thursday 26 February 2009, lists@xxxxxxxxxxxx wrote:
> > I have a couple of Fedora Core 4 guests (3 GB disk, 256 MB RAM, 512 MB
> > swap) on Fedora Core 4 dom0 + Xen 3.0.4 running bind 9.3.1 with about 500
> > zones each.
>
> Your guest setup is pretty much the same as the one I just built. I only
> have about 50 zones on this one but these are internal domains. The DNS
> servers act as outgoing for local clients. 
>
> > I'm not sure what you mean exactly with slow, but assuming you mean slow
> > responses to DNS queries, I don't have problems with them.
>
> I'm not sure that I should call it 'slow' but it's not as 'fast' as my
> stand alone's are, by a second or two perhaps.
>
> >Though, I don't
> > have concrete info about bind performance and all that stuff, since these
> > aren't our primary DNS servers but only serve zones of some specific
> > domains.
>
> I have a DNS measurement tool somewhere. The only reason I'm asking is
> because I want to be careful that I don't virtualize too much. If
> everything is even a tiny bit slower, then the overall will show up as
> sluggish services.
>
> Mike
>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users


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