[Samba] Samba Performance question

[Noel Kelly]

Someone else might well know better but....
 
I believe this is a file system issue.  ext2/ext3 manipulate the directory
entries using lists so if you have a great many files in one directory you
will see performance issues as you describe.
 
The answer to this is to change filesystem - no mean feat with your data
sizes.  Filesystems like XFS and ReiserFS use binary trees to manipulate the
directory entries and it is a far faster way of doing things with crowded
directories so you should see an improvemnet.
 
I suppose an alternative short term solution is to get the users to break
large directories up into small ones if the data lends itself to it.
 
HTH
Noel
 
 
-----Original Message-----
From: Belgardt, Wolfgang [mailto:Wolfgang.Belgardt at hp.com]
Sent: 05 December 2002 20:45
To: samba at samba.org
Subject: [Samba] Samba Performance question


Dear all,
 
I have a difficult Problem with samba 2.2.5, I hope everyone can help me.
My customer has samba 2.2.5 running on a HP Alpha Server ES40 Cluster with
Tru64 V5.1. The share on this Server has  3.1 million files in  16000
directories.
Some one this directories have 45000 files on it.
The problem is: if we try a search a file from this  big directory  via an
NT Client the response time is to large for the the customer.
He has run an similar application on a NT File server. NT responded after 1
sec  and samba need 6 sec.
Can someone explain me what I can do to increase the performance, please?
 
 
Kind Regards / Mit freundlichen Grüssen 
 
 
Wolfgang Belgardt
Customer Support Consultant
 
Hewlett-Packard GmbH
Customer Support
Bonsiepen 5
D-45136 Essen
Phone: ++49 (0) 201 2663 258
Fax:     ++49 (0) 201 2663 200
mobil:   +49 (0171 3357 256)
E-mail:   Wolfgang.Belgardt at hp.com <mailto:Wolfgang.Belgardt at hp.com> 
http://www.hp.com/de <http://www.hp.com/de> 
____________________________________________________________________________
______
Hewlett-Packard GmbH
Geschäftsführer: Jörg Menno Harms (Vorsitzender), Jürgen Banhardt, Wolfram
Fischer,
 Rainer Kaczmarczyk, Bärbel Schmidt, Fritz Schuller, Regine Stachelhaus
Vorsitzender des Aufsichtsrats: Heribert Schmitz 
Sitz der Gesellschaft: Böblingen, Amtsgericht Böblingen HRB 4081
 
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