Re: [squid-users] 3.4.0.1 dnsreq statistics question

* Amos Jeffries <squid3_at_treenet.co.nz>:
> On 30/07/2013 11:15 p.m., Ralf Hildebrandt wrote:
> >I had good results replacing 3.3.8 with 3.4.0.1 - no changes to the
> >config were needed.
> >
> >One interesting observation: The dnsreq statistics are different. With
> >3.3.8 the graphs for requests and replies were "identical". Plotted on
> >top of each other -- only one graph could be seen.
> >
> >Since switching to I'm seeing MORE requests than replies. Not much,
> >but enough for the graphs to be seen individually. Currently I'm
> >seeing 10.17 requests and 8.21 replies per second.
> >
> >Is this to be expected?
>
> Yes and No.
>
> Yes, 3.4 added mDNS support which have no particular guarantee of
> getting any response. If you do not have mDNS setup the .local
> requests will timeout instead, before moving on to the global
> resolution methods.

So I would see *.local queries in the query log on the local caching
DNS on the machine?

> No, because the above event should only show up on single-label
> domain names in URL or Host: header.

Like accesssing http://www ?

> And if you do have .local mDNS setup in the network

We don't use that in the server networks.

> most of them should be getting responses anyway.

-- 
Ralf Hildebrandt                   Charite Universitätsmedizin Berlin
ralf.hildebrandt_at_charite.de        Campus Benjamin Franklin
http://www.charite.de              Hindenburgdamm 30, 12203 Berlin
Geschäftsbereich IT, Abt. Netzwerk fon: +49-30-450.570.155