Date: Wed, 05 Jul 2006 15:41:30 -0500 From: Eric Anderson <anderson@centtech.com> To: "R. B. Riddick" <arne_woerner@yahoo.com> Cc: freebsd-geom@freebsd.org Subject: Re: new class / geom_cache / request for comments Message-ID: <44AC23FA.8040606@centtech.com> In-Reply-To: <20060705190511.67863.qmail@web30307.mail.mud.yahoo.com> References: <20060705190511.67863.qmail@web30307.mail.mud.yahoo.com>
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R. B. Riddick wrote: > --- Eric Anderson <anderson@centtech.com> wrote: >> Just curious, how is this different/better than the regular buffer cache? >> > Hi Eric! > > The buffer cache? :-) > [This remembers me on the episode in The Simpsons where Mr.Burns tried to find > the meaning of "re-cyc-ling" in his builtin dictionary] > > Do you mean this cache of those file systems? > If yes: The answer should be: "It just makes everything worse." (there is not > even some read ahead...) Not sure what I'm missing here, please clue me in. I guess I am indeed talking about the cache normally used for filesystems. If I read a 500MB file in, first time it comes from disk, second time it comes from memory cache, correct? How is geom_cache different? > It is just useful, if you dont have any other caches (e. g. a ufs on a > geom_raid5 (I think I should have it tomorrow... :-) ) on some geom_cache > providers)... I suppose I just need to play with it to completely understand.. Eric -- ------------------------------------------------------------------------ Eric Anderson Sr. Systems Administrator Centaur Technology Anything that works is better than anything that doesn't. ------------------------------------------------------------------------
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