Date: Wed, 11 Mar 2009 13:16:01 -0700 From: Russell Jackson <raj@csub.edu> To: freebsd-stable@freebsd.org Subject: Re: Performance with hundreds of nullfs mounts? Message-ID: <49B81C01.1080007@csub.edu> In-Reply-To: <9bbcef730903101927l3134ce66vf959354914fe4754@mail.gmail.com> References: <9bbcef730903101927l3134ce66vf959354914fe4754@mail.gmail.com>
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This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigBDEB598898B05181F0777497 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Ivan Voras wrote: > hi, > I seem to remember hearing an anecdote somewhere that using hundreds > (or thousands?) nullfs mounts for jails results in unreasonably bad > file system access performance. Does somebody have this kind of setup > / is it true? I was doing this with jails --before we moved to VMware ESX (for better o= r worse)-- and didn't see any noticeable performance degradation at the time (6.x series= ). For those interested, the biggest plus for going to the ESX model is that= it decoupled low utilization Windows boxes from over-spec'ed hardware and made it availabl= e for FreeBSD to use ;-). The downsides are that it's proprietary, it's expensive, it's in= efficient (e.g. duplicated files and kernel instances everywhere), and you need freak'in = Windows boxes to manage it. --=20 Russell A. Jackson <raj@csub.edu> Network Analyst California State University, Bakersfield The first thing I do in the morning is brush my teeth and sharpen my tongue. -- Dorothy Parker --------------enigBDEB598898B05181F0777497 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (FreeBSD) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkm4HAQACgkQq3dx2r0nUN923QCgmxuegwGXszptnegqlGQKwt31 pwYAn2kjrzXK0baYkhl0tD+XpSNSUHI9 =ubKN -----END PGP SIGNATURE----- --------------enigBDEB598898B05181F0777497--
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