linux-kernel - [PATCH] NR_OPEN should be raised a litle bit

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Date:	Fri, 16 Nov 2007 22:53:08 +0100
From:	Eric Dumazet <dada1@...mosbay.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	Linux kernel <linux-kernel@...r.kernel.org>
Subject: [PATCH] NR_OPEN should be raised a litle bit

Time has come to change NR_OPEN value, some production servers hit the
not so 'ridiculously high value' of 1024*1024 file descriptors per process.

This is safe to raise this value, because alloc_fd_array() uses
vmalloc() for large arrays and vmalloc() returns NULL if a too large
allocation is attempted (or in case of memory shortage)

Moore law implies this limit should be changed every 1-2 years, and it seems
we forgot doing this for ages.

Even on my old notebook, a process can open 1000000 descriptors without any 
problem.

Signed-off-by: Eric Dumazet <dada1@...mosbay.com>

View attachment "nr_open.patch" of type "text/plain" (429 bytes)