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.
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