[Lustre-discuss] fast traverse

Andreas Dilger adilger at sun.com
Thu Sep 11 15:05:13 PDT 2008


On Sep 11, 2008  06:28 -0400, Mag Gam wrote:
> I have a filesystem with over 1m directories which are filled with
> hourly temperatures of a controller environment for years. They are
> being hosted on our lustre filesystem, and I constantly do a a fstat()
> and fstat64() to get the directory's create time. I was wondering if
> there is a way to speed this operation? Is it possible for me to
> increase the mds cache? Are there any tricks I can perform to speed
> this operation up?

To cache 1M directory entries would need in the range of 6GB of RAM.

Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.




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