httpd-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Jeff Trawick <traw...@gmail.com>
Subject Re: Apache 2.2 mod_proxy fails to send Fin-Hack
Date Tue, 29 Jan 2013 16:18:40 GMT
On Tue, Jan 29, 2013 at 6:25 AM, <sebastien.allamand@orange.com> wrote:

> Hello,****
>
> ** **
>
> I’ve got an issue with mod_proxy, on eavy load, I have a lot of HTTP 503
> response.****
>
> ** **
>
> When looking in detail on requests, we can see that mod_proxy don’t close
> properly the request (it waits for the next request to send FIN-HACK to the
> backend).
>

mod_proxy doesn't normally close the backend connection immediately after
using it.  Instead, the connection will be closed when processing a
subsequent request and it is then determined that the connection can't be
reused.  This behavior is expected and rarely (if ever) the *root* cause of
operational problems, though there are some circumstances where turning off
backend connection reuse is appropriate.

Is the backend server returning 503s because a lot of connections from the
proxy are in keep-alive state?  If so, maybe you should lower keepalive
timeouts for the backend connection.




****
>
> ** **
>
> ****
>
> ** **
>
> I’ve found that a similar issue have already been reported :****
>
> https://issues.apache.org/bugzilla/show_bug.cgi?id=50807****
>
> ** **
>
> Is there any correction on the mod_proxy regarding this problem, would it
> appears again using apache 2.4 ?****
>
> ** **
>
> Thanks in advance for replies.****
>
> ** **
>
> ** **
>
> Sébastien ****
>
> ** **
>
> _________________________________________________________________________________________________________________________
>
> Ce message et ses pieces jointes peuvent contenir des informations confidentielles ou
privilegiees et ne doivent donc
> pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu ce message
par erreur, veuillez le signaler
> a l'expediteur et le detruire ainsi que les pieces jointes. Les messages electroniques
etant susceptibles d'alteration,
> France Telecom - Orange decline toute responsabilite si ce message a ete altere, deforme
ou falsifie. Merci.
>
> This message and its attachments may contain confidential or privileged information that
may be protected by law;
> they should not be distributed, used or copied without authorisation.
> If you have received this email in error, please notify the sender and delete this message
and its attachments.
> As emails may be altered, France Telecom - Orange is not liable for messages that have
been modified, changed or falsified.
> Thank you.
>
>


-- 
Born in Roswell... married an alien...
http://emptyhammock.com/

Mime
View raw message