Thanks Andreas. We are planning to implement 250GB per user. Do you think there will be a performance degration?
On Wed, Sep 24, 2008 at 4:11 PM, Andreas Dilger <[EMAIL PROTECTED]> wrote: > On Sep 24, 2008 06:11 -0400, Mag Gam wrote: >> I was wondering if we should implement quotas for our students but is >> there a downside such as performance? Previously, we implemented >> quotes using vxfs and we noticed a significant performance hit and the >> users were not happy. So, are there any downsides such as performance >> loss when using quotas? > > There is defitely some performance overhead for quotas. I don't have > a number offhand. The actual performance overhead depends on how hard > you are pushing the network/filesystem already - if the IO rates aren't > extreme then the network quota overhead probably isn't too bad. > > The quota for Lustre is designed to be high performance, with some > sacrifice to the accuracy of the quota. It isn't really designed to > handle tiny quotas (like 50MB/user), if that is your target. > > Cheers, Andreas > -- > Andreas Dilger > Sr. Staff Engineer, Lustre Group > Sun Microsystems of Canada, Inc. > > _______________________________________________ Lustre-discuss mailing list Lustre-discuss@lists.lustre.org http://lists.lustre.org/mailman/listinfo/lustre-discuss