Date: Sun, 4 Nov 2007 09:48:17 +0100 From: Peter Schuller <peter.schuller@infidyne.com> To: freebsd-current@freebsd.org Subject: Re: ZFS Hangs Message-ID: <200711040948.25732.peter.schuller@infidyne.com> In-Reply-To: <20071103164231.GB23714@outcold.yadt.co.uk> References: <200711021208.25913.Thomas.Sparrevohn@btinternet.com> <20071103164231.GB23714@outcold.yadt.co.uk>
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--nextPart12928624.AgsU4zfSXM Content-Type: text/plain; charset="iso-8859-15" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline > For example, pkg_delete seems to be _extremely_ slow and ^T reports that > it is stuck waiting on zfs:(&zio->io_cv) for an unreasonable (IMO) amount > of time. =46WIW, I have seen pkg_install (and possibly other pkg_* tools) being extr= emely=20 slow seemingly as a result of the active set of files it touches exceededin= g=20 the amount cached. In particular I had this problem after converting to ZFS= ,=20 but prior to switching to amd64 and more RAM. It would sit and churn on disk I/O forever, entirely seek bound. Tracing th= e=20 processes showed it traversing the package database over and over (presumab= ly=20 recursively following dependencies or some such). So the same files were=20 touched any number of times. As a result, with too little cached, runtime=20 exploded (it took hours and hours upgrading my desktop using *binary*=20 pre-built packages because the larger packages with a lot of dependencies=20 would take forever to install and delete). =2D-=20 / Peter Schuller PGP userID: 0xE9758B7D or 'Peter Schuller <peter.schuller@infidyne.com>' Key retrieval: Send an E-Mail to getpgpkey@scode.org E-Mail: peter.schuller@infidyne.com Web: http://www.scode.org --nextPart12928624.AgsU4zfSXM Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (FreeBSD) iD8DBQBHLYdZDNor2+l1i30RAtVFAJ9kIERRlObpc3tUggSQPezQgwRZtACgkLdY 74IJ4xB4XitSYLz7uSyiVmI= =VG0A -----END PGP SIGNATURE----- --nextPart12928624.AgsU4zfSXM--
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