Date: Mon, 19 Dec 2005 14:19:08 -0800 (PST) From: Jon Dama <jd@ugcs.caltech.edu> To: Matthias Andree <matthias.andree@gmx.de> Cc: freebsd-fs@freebsd.org, "Cai, Quanqing" <caiquanqing@gmail.com>, freebsd-current@freebsd.org Subject: Re: XFS (read-only) support committed to CURRENT Message-ID: <Pine.LNX.4.53.0512191417180.2649@lira.ugcs.caltech.edu> In-Reply-To: <20051219215551.GA7362@merlin.emma.line.org> References: <20051213151908.GA26821@crodrigues.org> <m37ja59ttm.fsf@merlin.emma.line.org> <20051216151228.GA34670@crodrigues.org> <20051217141647.GC27992@merlin.emma.line.org> <2b22951e0512172355k36a579f4i42dd72562a3530ed@mail.gmail.com> <20051218092523.GA4694@merlin.emma.line.org> <2b22951e0512191348t227c9354i36d6a4a87e7d5698@mail.gmail.com> <20051219215551.GA7362@merlin.emma.line.org>
next in thread | previous in thread | raw e-mail | index | archive | help
> On the downside, ext3fs and write caches don't mix well, unless you have > battery backup units sitting on your RAID controllers (I do, and > switching this MegaRAID - RAID5 on 2+1 - to writeback mode improved > write speed by a factor of 5 - no database loads though). This an issue that Kirk has been looking into. Ideally the problem will go away completely when both request barriers and NCQ are implemented. (The latter for people with high-end SATA drives and the former for the rest of the consumers of ATA). -Jon
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.LNX.4.53.0512191417180.2649>