linux-kernel - Re: [PATCH] increase pipe size/buffers/atomicity :D

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Message-ID: <1270703467.8141.51.camel@edumazet-laptop>
Date:	Thu, 08 Apr 2010 07:11:07 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	brian <knotwurk@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] increase pipe size/buffers/atomicity :D

Le mercredi 07 avril 2010 à 19:38 -0600, brian a écrit :
> (tested and working with 2.6.32.8 kernel, on a Athlon/686)
> 
> 
> --- include/linux/pipe_fs_i.h.orig      2010-04-06 22:56:51.000000000 -0500
> +++ include/linux/pipe_fs_i.h   2010-04-06 22:56:58.000000000 -0500
> @@ -3,7 +3,7 @@
> 
>  #define PIPEFS_MAGIC 0x50495045
> 
> -#define PIPE_BUFFERS (16)
> +#define PIPE_BUFFERS (32)

Doing such a thing puts high pressure on stack usage on some parts of
the kernel, and actually slow down some benches.



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