Subject: Re: mfs woes
To: None <firstname.lastname@example.org>
From: Andrew Brown <email@example.com>
Date: 07/13/2004 23:01:12
On Tue, Jul 13, 2004 at 05:18:31PM -0500, David Young wrote:
>I am told that blocks in the memory filesystem (mfs) can end up in the
>buffer cache: this double-whammy on memory can lead to memory exhaustion.
yes, 'cause it's a "file system".
>The problem is compounded (I do not understand how or why) when multiple
>mfs are in use.
>Is there any bug-fix or work-around for the memory-inefficiency/exhaustion
>issue? Can somebody outline what a fix would look like?
write a real swap-based file system? mfs also comes with a ~2.9
gigabyte limit (on i386, at least). when using USE_TOPDOWN_VM. when
you're not, it comes with a ~1.8 gigabyte limit. regardless of how
much ram or swap you have.
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