From: Kalpak Shah <kalpak@linsyssoft.com>
To: Karuna sagar K <karunasagark@gmail.com>
Cc: Amit Gud <gud@ksu.edu>,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: ChunkFS - measuring cross-chunk references
Date: Mon, 23 Apr 2007 15:04:36 +0530 [thread overview]
Message-ID: <1177320876.23226.7.camel@garfield> (raw)
In-Reply-To: <2e4afe1e0704230019h3853bc82uae6c9b5cdc325ab9@mail.gmail.com>
On Mon, 2007-04-23 at 12:49 +0530, Karuna sagar K wrote:
> Hi,
>
> The tool estimates the cross-chunk references from an extt2/3 file
> system. It considers a block group as one chunk and calcuates how many
> block groups does a file span across. So, the block group size gives
> the estimate of chunk size.
>
> The file systems were aged for about 3-4 months on a developers laptop.
>
With a blocksize of 4KB, a block group would be 128 MB. In the original
Chunkfs paper, Valh had mentioned 1GB chunks and I believe it will be
possible to use 2GB, 4GB or 8GB chunks in the future. As the chunk size
increases the number of cross-chunk references will reduce and hence it
might be a good idea to present these statistics considering different
chunk sizes starting from 512MB upto 2GB.
Thanks,
Kalpak.
next prev parent reply other threads:[~2007-04-23 11:13 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-22 20:35 ChunkFS - measuring cross-chunk references Karuna sagar K
2007-04-22 16:27 ` Amit Gud
2007-04-23 7:19 ` Karuna sagar K
2007-04-23 9:34 ` Kalpak Shah [this message]
2007-04-23 20:53 ` Andreas Dilger
2007-04-24 0:13 ` Theodore Tso
2007-04-24 1:02 ` Arjan van de Ven
2007-04-24 1:24 ` Amit Gud
2007-04-24 1:38 ` Amit Gud
2007-04-24 15:07 ` Theodore Tso
2007-04-25 0:17 ` Karuna sagar K
2007-04-25 0:20 ` Karuna sagar K
2007-04-25 10:23 ` Suparna Bhattacharya
2007-05-19 22:49 ` Karuna sagar K
2007-05-07 5:18 ` Valerie Henson
2007-05-07 1:09 ` Valerie Henson
2007-05-07 1:09 ` Valerie Henson
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