Jean-Marc,
Perhaps a quick run of "fileop -f 100" from the Iozone
suite might help identify which meta-data operations
are problematic ?
Enjoy
Don Capps
----- Original Message -----
From: "Peter J. Braam" <[EMAIL PROTECTED]>
To: "'Jean-Marc Saffroy'" <[EMAIL PROTECTED]>; "'Andreas
Dilger'" <[EMAIL PROTECTED]>
Cc: "'Lin Shen (lshen)'" <[EMAIL PROTECTED]>; "'Lustre User Discussion Mailing
List'" <[email protected]>
Sent: Friday, November 03, 2006 5:55 PM
Subject: RE: [Lustre-discuss] Lustre Lite
Hi Jean-Marc,
Do you have a test on which NFS performs much better. We'd like to know
more about that.
If you go bak on this list, you will see that Lustre can handsomely beat
NFS
at unpacking archives, for example. So I am curious.
- Peter -
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
Jean-Marc Saffroy
Sent: Friday, November 03, 2006 9:30 PM
To: Andreas Dilger
Cc: Lin Shen (lshen); Lustre User Discussion Mailing List
Subject: Re: [Lustre-discuss] Lustre Lite
On Fri, 3 Nov 2006, Andreas Dilger wrote:
> You should be able to run a database on top of Lustre, but
this is not
> a common mode of operation for our current customers and I
don't know
> how well it functions.
Maybe poor performance is what limits adoption of Lustre for
transactional
workloads: I heard some stories of users trying database-like
access (ie.
updates of many small files) on Lustre, with mixed or
terrible results.
NFS gives much better results with small files, but it does
not scale well, and it lacks good POSIX conformance (ie. wrt caching).
Too bad we don't have the best of both worlds!
--
Jean-Marc Saffroy - [EMAIL PROTECTED]
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