Date: Tue, 20 Jun 2006 16:07:34 -0400 From: Mike Jakubik <mikej@rogers.com> To: Xin LI <delphij@delphij.net> Cc: freebsd-fs@FreeBSD.org, freebsd-current@FreeBSD.org, Pawel Jakub Dawidek <pjd@FreeBSD.org>, freebsd-geom@FreeBSD.org Subject: Re: Journaling UFS with gjournal. Message-ID: <44985586.2090504@rogers.com> In-Reply-To: <1150833586.24301.1.camel@spirit> References: <20060619131101.GD1130@garage.freebsd.pl> <44984A91.8040805@rogers.com> <20060620193630.GA8007@garage.freebsd.pl> <1150833586.24301.1.camel@spirit>
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Xin LI wrote: > 在 2006-06-20二的 21:36 +0200，Pawel Jakub Dawidek写道： > >> The performance impact is big for large files, because in theory we have >> to write the data twice. >> Yes, it eliminates need for SU, but there are reasons, that you still >> want to use SU, eg. for snapshots. >> > > Em... IIRC SU and snapshots are independent, no? > > Cheers, > What about mounting the filesystem async though? It was my understanding that the Linux filesystems were much faster in benchmarks because they were mounted async by default, however the presence of journaling allowed this safely. Is this the case here too?
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