Client body buffering with FastCGI

Maxim Dounin mdounin at
Fri Feb 18 18:28:21 MSK 2011


On Fri, Feb 18, 2011 at 07:43:09AM -0500, Maxim Khitrov wrote:


> Here's the information in case you want to see why unix sockets cause
> this problem. I don't think you even need to use the specific software
> I was trying to configure. Write a 1-line PHP script that saves some
> POSTed variable to a file. Then post more than 64 MB of data and see
> if it breaks.
> The OS is FreeBSD 7.3-RELEASE-p4 amd64. Nginx 0.8.54 configuration for
> AjaXplorer with irrelevant parts removed:


>     sendfile on;


>             fastcgi_pass unix:/tmp/php.sock;


Ok, thanks for info.  I tend to think that it's kernel problem 
with sendfile(2) and unix sockets.

Could you please test if a) not using sendfile (in location in 
question) resolves the problem and b) not using unix sockets 
resolves the problem?  Just to make things more clear.

I'll try to reproduce this issue here and dig further into it, but 
unfortunately I'm a bit busy now and it's unlikely to happen 
anytime soon.

Maxim Dounin

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