Hello all,

I am using pound in front of a web-application. Users can request an SPSS
(analytical application) file that is generated on the server as a response
to an HTTP GET request. These files tend to become quite large.

The problem is that Pound seems to truncate the response to about 5MB, where
the original response is about 20Mb. Is there any limitation on the size of
a response? Can I circumvent that?

Regards,

Silvio Bierman

On Thu, 2005-12-08 at 13:04 +0100, Silvio Bierman wrote:[...]

There is no limitation, but on slow servers the back-end may time out
during the transfer. Try increasing the Server value and see if it
helps.

Have a look at the log file and tell us what it says - that may give you
a pretty good idea of what is happening.

If you don't use the latest 1.9.5 you should upgrade as it includes some
changes which may also have an effect.[...]

(at) -----Original Message-----
(at) From: Robert Segall [mailto:roseg(at)apsis.ch]
(at) Sent: 08 December, 2005 15:26
(at) To: pound(at)apsis.ch
(at) Subject: Re: [Pound Mailing List] Response size limitations? (URGENT)
(at)
(at)
(at) On Thu, 2005-12-08 at 13:04 +0100, Silvio Bierman wrote:
(at) > Hello all,
(at) >
(at) > I am using pound in front of a web-application. Users can
(at) request an SPSS
(at) > (analytical application) file that is generated on the server
(at) as a response
(at) > to an HTTP GET request. These files tend to become quite large.
(at) >
(at) > The problem is that Pound seems to truncate the response to
(at) about 5MB, where
(at) > the original response is about 20Mb. Is there any limitation on
(at) the size of
(at) > a response? Can I circumvent that?
(at)
(at) There is no limitation, but on slow servers the back-end may time out
(at) during the transfer. Try increasing the Server value and see if it
(at) helps.
(at)
(at) Have a look at the log file and tell us what it says - that may give you
(at) a pretty good idea of what is happening.
(at)
(at) If you don't use the latest 1.9.5 you should upgrade as it includes some
(at) changes which may also have an effect.
(at) --
(at) Robert Segall
(at) Apsis GmbH
(at) Postfach, Uetikon am See, CH-8707
(at) Tel: +41-44-920 4904
(at)
(at)
(at) --
(at) To unsubscribe send an email with subject 'unsubscribe' to
pound(at)apsis.ch.
(at) Please contact roseg(at)apsis.ch for questions.
(at) http://www.apsis.ch/pound/pound_list/archive/2005/2005-12/11340434
85000/1134051959000

Hello Robert,

Thanks for the response. I checked the config and the manual for the Server
setting. I did not set it and the man says it defaults to infinity. To make
sure I put the large file as a static file on the webserver. The download
through Pound failed early where the file was correctly returned when going
to the backend directly.

I can not find the log. There is no file in /var/log that has a name that
sounds pound-related, should I look elsewhere?

Regards,

Silvio Bierman

PS: Care to react on my posts on the session handling?

On Fri, 2005-12-09 at 00:19 +0100, Silvio Bierman wrote:[...]

Try it anyway and see what happens. Playing with Client may also help.
Finally have you looked at the long discussion we had here about TCP
tuning? Are you using the latest version?
[...]

Where the messages go (and what they are) depends on how you set Pound
up and your syslog configuration. The messages are certainly required
for any sort of understanding of the problem.
[...]

I'm not really sure how. I can commiserate, but without more information
(log files, exact description, configuration, packet traces) I can
hardly help. A generic "I may have a problem with xxx" is not much to go
on, especially when many other people seem to use the same feature
without problems.[...]

[...]

Look into /var/log/syslog:
Date-time hostname pound: ......

Regards,
Lorenzo Grio.

(at) -----Original Message-----
(at) From: Robert Segall [mailto:roseg(at)apsis.ch]
(at) Sent: 09 December, 2005 09:21
(at) To: pound(at)apsis.ch
(at) Subject: RE: [Pound Mailing List] Response size limitations? (URGENT)
(at)
(at)
(at) On Fri, 2005-12-09 at 00:19 +0100, Silvio Bierman wrote:
(at) > Hello Robert,
(at) >
(at) > Thanks for the response. I checked the config and the manual
(at) for the Server
(at) > setting. I did not set it and the man says it defaults to
(at) infinity. To make
(at) > sure I put the large file as a static file on the webserver.
(at) The download
(at) > through Pound failed early where the file was correctly
(at) returned when going
(at) > to the backend directly.
(at)
(at) Try it anyway and see what happens. Playing with Client may also help.
(at) Finally have you looked at the long discussion we had here about TCP
(at) tuning? Are you using the latest version?
(at)
(at) > I can not find the log. There is no file in /var/log that has a
(at) name that
(at) > sounds pound-related, should I look elsewhere?
(at)
(at) Where the messages go (and what they are) depends on how you set Pound
(at) up and your syslog configuration. The messages are certainly required
(at) for any sort of understanding of the problem.
(at)
(at) > Regards,
(at) >
(at) > Silvio Bierman
(at) >
(at) > PS: Care to react on my posts on the session handling?
(at)
(at) I'm not really sure how. I can commiserate, but without more information
(at) (log files, exact description, configuration, packet traces) I can
(at) hardly help. A generic "I may have a problem with xxx" is not much to go
(at) on, especially when many other people seem to use the same feature
(at) without problems.
(at) --
(at) Robert Segall
(at) Apsis GmbH
(at) Postfach, Uetikon am See, CH-8707
(at) Tel: +41-44-920 4904
(at)
(at)
(at) --
(at) To unsubscribe send an email with subject 'unsubscribe' to
pound(at)apsis.ch.
(at) Please contact roseg(at)apsis.ch for questions.

Hello Robert,

Thanks for the response. I found the LOG but it only contains entries for
thelast 24 hours and I have not yet been able to reproduce the problem after
the last Pound restart. I read a message that someone found a similar
problem in a 2.x version and you stated that this version uses the same code
as 1.9.x (which I use). Perhaps my problem is related.

My question about the previous posts refers to posts (dec-2 and dec-6) about
the Session handling (and allowing dynamic change of backend prios). I hope
you are willing to comment on that? It is an extremely important issue for
us.

Thanks,

Silvio Bierman

On Wed, 2005-12-14 at 14:21 +0100, Silvio Bierman wrote:[...]

There are two separate questions here, which kind of confuses me: on the
one hand you claim that COOKIE-based sessions do not work (which we - or
anybody else - can't reproduce, and you seem reluctant to elaborate
upon). On the other you would like a new feature (graceful shutting down
back-ends), which, as I explained elsewhere, shall be considered after
the 2.0 release. Would you care to be more specific?[...]

(at)
(at) On Wed, 2005-12-14 at 14:21 +0100, Silvio Bierman wrote:
(at) > Hello Robert,
(at) >
(at) > Thanks for the response. I found the LOG but it only contains
(at) entries for
(at) > thelast 24 hours and I have not yet been able to reproduce the
(at) problem after
(at) > the last Pound restart. I read a message that someone found a similar
(at) > problem in a 2.x version and you stated that this version uses
(at) the same code
(at) > as 1.9.x (which I use). Perhaps my problem is related.
(at) >
(at) > My question about the previous posts refers to posts (dec-2 and
(at) dec-6) about
(at) > the Session handling (and allowing dynamic change of backend
(at) prios). I hope
(at) > you are willing to comment on that? It is an extremely
(at) important issue for
(at) > us.
(at)
(at) There are two separate questions here, which kind of confuses me: on the
(at) one hand you claim that COOKIE-based sessions do not work (which we - or
(at) anybody else - can't reproduce, and you seem reluctant to elaborate
(at) upon). On the other you would like a new feature (graceful shutting down
(at) back-ends), which, as I explained elsewhere, shall be considered after
(at) the 2.0 release. Would you care to be more specific?
(at) --
(at) Robert Segall
(at) Apsis GmbH
(at) Postfach, Uetikon am See, CH-8707
(at) Tel: +41-44-920 4904
(at)
(at)
(at) --
(at) To unsubscribe send an email with subject 'unsubscribe' to
pound(at)apsis.ch.
(at) Please contact roseg(at)apsis.ch for questions.
(at) http://www.apsis.ch/pound/pound_list/archive/2005/2005-12/11340434
(at) 85000/1134649762000

Hello Robert,

I tried the COOKIE setting for the sessions initially because that seemed
the most logical to me. I immediately got problems with sessions being
dropped quite frequently and decided to try IP sessions. They work for me
also and since my load is largely created by many different (unknown) users
hitting the server the method is close to optimal. I may have been doing
something wrong with the COKKIE sessions, so I was not implying I suspected
Pound malfunction there...

I was actually referring to gracefully shutting down backends. I did read
some threads on the list about this but must have missed your message
stating you will look into it after the 2.0 release. That was actually just
what I wanted to know, I can wait for this but I wanted to be sure this may
eventually be implemented.

Keep up the good work, Pound is a fine peace of software. We have been using
it on our ASP platform for a short period only but I am already advising
customers who run our software on with their own servers to move from Apache
to Pound.

Regards,

Silvio Bierman