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Date:      Thu, 10 Aug 2006 14:07:21 -0500
From:      Eric Anderson <anderson@centtech.com>
To:        Craig Boston <craig@xfoil.gank.org>, Pawel Jakub Dawidek <pjd@FreeBSD.org>, freebsd-fs@FreeBSD.org, freebsd-geom@FreeBSD.org
Subject:   Re: GJournal (hopefully) final patches.
Message-ID:  <44DB83E9.2090402@centtech.com>
In-Reply-To: <20060810184702.GA8567@nowhere>
References:  <20060808195202.GA1564@garage.freebsd.pl> <20060810184702.GA8567@nowhere>

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On 08/10/06 13:47, Craig Boston wrote:
> Hi,
> 
> It's great to see this project so close to completion!  I'm trying it
> out on a couple machines to see how it goes.
> 
> A few comments and questions:
> 
> * It took me a little by surprise that it carves 1G out of the device
>   for the journal.  Depending on the size of the device that can be a
>   pretty hefty price to pay (and I didn't see any mention of it in the
>   setup notes).  For a couple of my smaller filesystems I reduced it to
>   512MB.  Perhaps some algorithm for auto-sizing the journal based on
>   the size / expected workload of the device would be in order?


The size of the journal is related to the write speed of the journeled 
device and the journal swap time (default 10 seconds).


Eric




-- 
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Eric Anderson        Sr. Systems Administrator        Centaur Technology
Anything that works is better than anything that doesn't.
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