Forum: NGINX Setting large proxy_buffer_size

Ran into an issue that I needed to set a larger proxy_buffer_size (e.g. 
to
128k). It works after increasing.

However my question is: what's the disadvantages of setting a large 
buffer
size? If there is no disadvantage, why the default is only 8k? Is there 
a
certain value that I certainly shouldn't set it larger than that?

Thanks!

Posted at Nginx Forum: 
http://forum.nginx.org/read.php?2,233654,233654#msg-233654

Hello!

On Thu, Dec 06, 2012 at 02:06:26PM -0500, spacerobot wrote:

> Ran into an issue that I needed to set a larger proxy_buffer_size (e.g. to
> 128k). It works after increasing.
>
> However my question is: what's the disadvantages of setting a large buffer
> size? If there is no disadvantage, why the default is only 8k? Is there a
> certain value that I certainly shouldn't set it larger than that?

Obvious disadvantage is that it needs more memory if set to a
bigger value.  It's set to pagesize by default as it's an amount
of memory which may be effeciently allocated, and sufficient for
most uses (which doesn't try to abuse HTTP headers to transfer
data).

--
Maxim Dounin
http://nginx.com/support.html