On Fri, 14 Apr 2000, Jim Mostek wrote:
>
> I haven't played with ReiserFS but from what I've read/heard, my guess
> is that it will do small files really well. XFS' directories can
> also handle many entries, but ReiserFS with its packing and data in the
> inode can handle small files better. But, I don't know how ReiserFS will
> do when many processes are hitting the same directory on a multi-CPU
> system. XFS has had lots of work done in this area since we have many
> customer running old sendmail which does all its file work in the same
> directory.
>
This is mostly true. We are working on better threading of the reiserfs
tree structures, to increase our SMP speeds, and adding support for
dedicated log devices (I think XFS has this already) to help speed up
metadata and fsync() intensive applications.
[...]
> Longer term, it appears that the Linux community will have a rich set
> of file systems available. These can be downloaded and analyzed.
> I suspect that there will be some matrix mapping applications/environments
> to file systems to show which file system(s) to use for each.
>
Very true. Also, as the various journaled filesystems are merged into the
kernel, the underlying I/O drivers will probably be tuned to help support
them. I'm sure SGI and IBM both will add a great deal of value to linux
there.
-chris
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