[Lustre-discuss] Slow Tar File Extraction

[Mike Hanby]

Howdy Brett, thanks for the reply.

The MDS is using local passwd and group files that are mirrored around the cluster. So, uid look should be fast.

I also tried turning the default debugging level to 0 on the client and didn't see a noticable difference.
________________________________________
From: brett.worth at gmail.com [brett.worth at gmail.com] On Behalf Of Brett Worth [brett at worth.id.au]
Sent: Sunday, March 27, 2011 7:42 AM
To: Mike Hanby
Cc: lustre-discuss at lists.lustre.org
Subject: Re: [Lustre-discuss] Slow Tar File Extraction

Hi Mike.

On 03/27/2011 04:57 PM, Mike Hanby wrote:
> An improvement of 25 minutes to 3 minutes is significant, but still a long way from the 10 seconds it takes on NFS mounted $HOME.

Is it possible that the mds is slow to resolve uid's?  Are you using local accounts or a
network name service?  If it's slow network lookups then nscd might help.  Does nscd work
on  an mds?

Brett
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