2011年2月28日星期一

Re: request hangs

agentzh Wrote:
-------------------------------------------------------
> On Mon, Feb 28, 2011 at 2:33 PM, magz wrote:
> > magz Wrote:
> >
> --------------------------------------------------
> -----
> >> Hi,
> >>
> >> I have strange problem with main request  hand
> if
> >> I call for sub-request.  Maybe somebody can
> help
> >> me with it?
> >>
>
> Which version of nginx are you using?
>
> If you're using nginx 0.8.x and above, the symptom
> suggests you didn't
> get r->main->count right. Use --with-debug while
> building your nginx,
> and track the values of r->main->count.
>
> For example, in the following line of my local
> error.log,
>
> 2011/01/28 13:01:50 1199#0: *1 http finalize
> request: -4,
> "/main?" a:0, c:3
>
> a:0 means the current request is not the active
> request at the moment
> (i.e., r != r->connection->data), and c:3 means
> r->main->count is 3.
> The request can only be successfully finalized
> unless it is the
> current active request. Also, the main request
> won't terminate, i.e.,
> will hang if the r->main->count counter is not
> going to be decremented
> to zero. Well, r->main->count is just a reference
> counter for the main
> request object. A simple way of doing poors'
> "garbage collection",
> well, at least kind of.
>
> When doing subrequest programming on the C level,
> one should be VERY
> VERY careful with these two values, among other
> things :)
>
> Cheers,
> -agentzh
>
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Thanks for the hint agentzh! Will try to dig in that area.

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,178511,179039#msg-179039


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