[Lustre-discuss] fast traverse

[Mag Gam]

I have 32GB on the MDS. So, where do I start? :-)



On Thu, Sep 11, 2008 at 6:05 PM, Andreas Dilger <adilger at sun.com> wrote:
> 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.
>
>