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Date:      Mon, 13 Oct 2008 14:22:02 +0200
From:      Ivan Voras <ivoras@freebsd.org>
To:        freebsd-fs@freebsd.org
Subject:   Re: CFT: vm_lowmem event handler patch for dirhash
Message-ID:  <gcvefl$1bv$1@ger.gmane.org>
In-Reply-To: <ea65dd980810130253n272384d5v7feb7ee45b89ca5f@mail.gmail.com>
References:  <ea65dd980810130253n272384d5v7feb7ee45b89ca5f@mail.gmail.com>

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Nick Barkas wrote:

> For more information and a bunch of graphs with results from my
> benchmarking, take a look at
> http://wiki.freebsd.org/DirhashDynamicMemory. Also, I'll be giving a
> talk about this project quite soon now at EuroBSDCon 2008.

It's interesting to see that the 2 MB cache is sometimes a little bit
faster than the 64 MB one (e.g. kernel build, svn operations, mail). Can
you point to an explanation? A bad hash function? Bucket count too low?
Experimental inaccuracy?


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