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Date: Mon, 24 Apr 2006 20:36:16 -0400
From: Kris Kennaway <kris@obsecurity.org>
To: Sam Leffler <sam@errno.com>
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Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org,
	Mohan Srinivasan <mohans@FreeBSD.org>
Subject: Re: cvs commit: src/sys/nfsserver nfsrvcache.h
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On Mon, Apr 24, 2006 at 05:29:08PM -0700, Sam Leffler wrote:
> Mohan Srinivasan wrote:
> >mohans      2006-04-25 00:21:57 UTC
> >
> >  FreeBSD src repository
> >
> >  Modified files:
> >    sys/nfsserver        nfsrvcache.h=20
> >  Log:
> >  Bump up the NFS server dupreq cache limit to 2K (from 64). With a small
> >  duplicate request cache, under heavy load a lot of non-idempotent=20
> >  requests
> >  were getting served again, resulting in errors.
>=20
> How does increasing the cache size fix this problem?

Fundamentally it doesn't, this change just pushes it out of the regime
where it's trivial to overflow.

Kris


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