RE: [squid-users] A single website is loading slow

Adding information to my previous reply - sorry.

I should have mentioned that my mention of compression was seen between the
client and Squid. I am not sure but it is possible that Squid was doing
compression with the origin server. In that case it probably invalidates my
comments about compression and means something else is causing the slower
response.

Apologies.

Paul

> -----Original Message-----
> From: Paul Freeman [mailto:paul.freeman_at_eml.com.au]
> Sent: Wednesday, 8 September 2010 3:55 PM
> To: RM; Amos Jeffries
> Cc: squid-users_at_squid-cache.org
> Subject: RE: [squid-users] A single website is loading slow
>
> I have had a quick look at the url you mentioned using Squid
> 3.0STABLE19 and
> IE7 (Windows XP SP2).
>
> There are 2 requests in the Squid access log which seem to take a while
> to
> retrieve:
> www.realestate.com/css/global/site.css followed by
> www.realestate.com/JS/common/re-all/re-all.js. These requests are
> approx.
> 200KB and 740KB respectively and take about 24sec and 42sec
> respectively to
> load on our ADSL2+ connection.
>
> When accessing the site directly rather than via squid from the same
> client,
> it takes about 15-20sec for the page to load.
>
> On the second access using Squid, the page loads in approx. 15-20sec.
> TCP_HIT is recorded in the Squid access log for the 2 urls mentioned
> above.
>
> I am not sure why it takes longer to load in Squid the first time
> except that
> maybe it is related to the browser using HTTP1.1 features (Accept-
> Encoding,
> Transfer-Encoding, etc) as I notice the data is compressed for the
> direct
> connection and uncompressed for the squid connection and the amount of
> data
> for the requests is approx 1/4-1/3 for the direct connection versus via
> squid. Perhaps Amos will have some ideas?
>
> Regards
>
> Paul
>
> > -----Original Message-----
> > From: RM [mailto:bearmeat_at_gmail.com]
> > Sent: Wednesday, 8 September 2010 1:29 PM
> > To: Amos Jeffries
> > Cc: squid-users_at_squid-cache.org
> > Subject: Re: [squid-users] A single website is loading slow
> >
> > On Tue, Sep 7, 2010 at 8:21 PM, Amos Jeffries <squid3_at_treenet.co.nz>
> > wrote:
> > > On Tue, 7 Sep 2010 19:31:45 -0700, RM <bearmeat_at_gmail.com> wrote:
> > >> I am having issues with just a single website loading very very
> > slowly
> > >> through Squid. The problematic website loads fine without a proxy
> > but
> > >> takes several minutes to load through Squid. All other websites
> load
> > >> perfectly fine.  I have tried the following:
> > >>
> > >> 1) I originally thought the issue was DNS related so I changed the
> > >> nameservers that Squid uses by using "dns_nameservers". I tried
> > >> several different local nameservers and then eventually tried free
> > >> services such as Google's and OpenDNS's. No luck.
> > >>
> > >> 2) To further convince myself it was not DNS, I entered the
> > website's
> > >> IP/host information into /etc/hosts and used Squid's "hosts_file"
> > >> directive to use /etc/hosts. This did not help either.
> > >>
> > >> Squid was restarted each time after making the above changes.
> > >>
> > >> Here are the access.log entries related to loading the website
> (URL
> > >> and IP addresses have been changed).
> > >>
> > >> 1283907376.404    320   222.222.222.222 TCP_MISS/301 508 GET
> > >> http://website.com username DIRECT/111.111.111.111 text/html
> > >> 1283907415.924  39277   222.222.222.222 TCP_MISS/200 62371 GET
> > >> http://www.website.com/ username DIRECT/111.111.111 text/html
> > >>
> > >> As you can see, the first log entry appears quickly after
> attempting
> > >> to load the website. The title of the website appears in the web
> > >> browser's title bar almost immediately but the content of the
> > website
> > >> does not load until much later.
> > >>
> > >> Any help is much appreciated.
> > >
> > > You have erased the vital information about *which* website URL and
> > > *where* it is. Have not provided any information about which squid
> > version
> > > you are talking about either.
> > >
> > > To get any type of useful help you need to present enough facts for
> > > someone else to replicate the problem please.
> > >
> > > All we can do at this point is say "yes. Your log shows that a
> > website is
> > > loading slowly". Other sites work fine? then conclude that the
> > problems is
> > > not in Squid itself but somewhere else which impacts Squid.
> > >
> > > Amos
> > >
> >
> > The website is www.realestate.com
> >
> > I am using Squid Cache: Version 2.6.STABLE21 on CentOS 5.5 32-bit
> >
> > Thanks.
> >
> >
> > __________ Information from ESET Smart Security, version of virus
> > signature database 5432 (20100907) __________
> >
> > The message was checked by ESET Smart Security.
> >
> > http://www.eset.com
> >
>
>
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> The message was checked by ESET Smart Security.
>
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>
> http://www.eset.com
>
 

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Received on Wed Sep 08 2010 - 06:07:52 MDT