RE: [squid-users] dns_children

You many want to have a look at the FAQ under 'System-Dependent
Weirdnesses - Solaris'

http://www.squid-cache.org/Doc/FAQ/FAQ-14.html#ss14.1

It mentions a few things about DNS lookups being slow under Solaris along
with some solutions.

-Mike

On Fri, 15 Jun 2001, Peter Kassies wrote:

> Henrik,
>
> Just for your information:
>
> I'am using squid 4.2 on Solaris 8 in a round robin load balancing reverse
> proxy environment. And after a few days my customer was complaining that he
> got a error from squid. "The requested URL could not be retrieved" This
> error has been discussed quite a few times in this newsgroup. It seems that
> Solaris doesn't deal very well with large quantity of DNS lookups.
>
> I have recompiled with --disable-internal-dns and running about 10 dns
> children.
>
> Since then I haven't had a single complaint about errors.
>
> I'm wondering, since you mentioned: "there is no limit on concurrent DNS
> lookups in the current code":
> a) does squid itself use /etc/resolv.conf and do the dns lookup itself (ie
> within the program), or
> b) squid request the OS to resolve the hostname?
>
> If b=true then it is clear that without --disable-internal-dns the Solaris
> OS is the bottleneck and thus responsable for generating the above mentioned
> error. Now with --disable-internal-dns, does this modify the squid
> configuration to option a?
>
> Peter
>
>
> > -----Oorspronkelijk bericht-----
> > Van: hno@hem.passagen.se [mailto:hno@hem.passagen.se]
> > Verzonden: Friday, June 15, 2001 7:41 AM
> > Aan: TomC
> > CC: squid-users@squid-cache.org
> > Onderwerp: Re: [squid-users] dns_children
> >
> >
> > Any special reason to why you have to configure dns_children to 10?
> >
> > The directive does not apply to default builds of Squid simply because
> > it is no longer needed as there is no limit on concurrent DNS lookups in
> > the current code. It is only available if Squid is built using the
> > (obsolete) dnsserver approach to DNS lookups (--disable-internal-dns).
> >
> > Just delete the directive from your squid.conf and you should be fine.
> >
> > --
> > Henrik Nordstrom
> > Squid Hacker
> >
> > TomC wrote:
> > >
> > > Hi,
> > > I have to config the dns_children to 10 but when I try to restart the
> > > squid by /usr/local/squid/bin/squid -k reconfigure. The squid says the
> > > parseConfigFile: line 810 unrecognized: 'dns_children 10'
> > > Why?
> > > Thanks
> >
>
>
Received on Fri Jun 15 2001 - 13:40:18 MDT