Skip site navigation (1)Skip section navigation (2)
Date:      Mon, 24 Apr 2006 20:36:16 -0400
From:      Kris Kennaway <kris@obsecurity.org>
To:        Sam Leffler <sam@errno.com>
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
Message-ID:  <20060425003615.GA21881@xor.obsecurity.org>
In-Reply-To: <444D6D54.1000007@errno.com>
References:  <200604250021.k3P0LvUZ033748@repoman.freebsd.org> <444D6D54.1000007@errno.com>

next in thread | previous in thread | raw e-mail | index | archive | help

--xHFwDpU9dbj6ez1V
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

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


--xHFwDpU9dbj6ez1V
Content-Type: application/pgp-signature
Content-Disposition: inline

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.3 (FreeBSD)

iD8DBQFETW7/Wry0BWjoQKURAto3AJsE2kX+sqXFvl6XoTXPWeEwwtBS/wCggFoY
69uBo3D2C8be8scgseVi8m4=
=tozq
-----END PGP SIGNATURE-----

--xHFwDpU9dbj6ez1V--



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20060425003615.GA21881>