Re: [squid-users] in crease dns response

From: Henrik Nordstrom <hno@dont-contact.us>
Date: Fri, 24 May 2002 09:16:12 +0200

Are you using the internal DNS client (default in Squid-2.3 and
later), or the external DNS client (dnsserver, the only choice in
Squid-2.2 and earlier)?

How are these connected to their DNS servers? Over a good link, or a
slow/overloaded link?

Also compare with the statistics printed in cachemgr. I think SNMP
gives you average response time, while cachemgr gives you median...
It could be that there is a few DNS lookups for failing DNS domains
causing the difference..

What you can try is to have your DNS caches forward to a central DNS
server if applicable. This helps quite a bit on "remote" DNS servers
on slow links.

IIRC bind can also collect some statistics that might give you a
better view of what is going on.

Regards
Henrik

On Friday 24 May 2002 04:07, Brian Leung wrote:
> i try to use mrtg to plot the DNS response time of each web cache.
> i found some of them response quite slow. Then i want to increase
> the DNS response time.
>
> Regards,
> Brian Leung
> System Engineer
> Pacific Supernet
>
> On Thu, 23 May 2002, Squid Support (Henrik Nordstrom) wrote:
> > Sorry, I do not understand your question. Try to rephrase it in
> > other words.
> >
> > TomC wrote:
> > > hi all,
> > > how can i increase the dns response and i have already
> > > installed the cache only named in the proxy?
> > >
> > > Regards,
> > > _______________________________________________________________
> > >___ Brian Leung
> > > ICQ#: 18660548
> > > Current ICQ status:
> > > + More ways to contact me
> > > _______________________________________________________________
> > >___
> >
> > --
> > Basic free Squid support provided thanks to MARA Systems AB
> > Your source of advanced reverse proxy solutions or customized
> > Squid solutions. http://www.marasystems.com/products/
Received on Fri May 24 2002 - 01:31:12 MDT

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