samba - Feb 2005 - fast reads, slow writes

We have two SUSE SLES 9.0 x86-64 servers on gigabit network, one with 
RAID1 and samba 3.0.4,
and one with RAID10 upgraded to samba 3.0.9. Both have the same problem: 
when you copy from
server to client, speeds are on big files about 40MB/s for RAID1 and 
about 60MB/s for RAID10.
But when you copy to server, speed are about 8MB/s. I have set up ftp 
servers on them just to try
ftp protocol upload, and  it is happy full speed both directions.

After few hours of googling, I found "security = share" hint, which 
didn't help, and after little more
time "use sendfile  =  yes" hint, which helped little bit, speeds are 
now 10-12MB/s, but still not
acceptable.

We don't intend to use samba servers as PDC, but just only as workgroup NAS.

Original smb.conf is attached (before security and sendfile tweaking).

One more question: does anybody know good utility to test speed of 
remote volumes ?
-------------- next part --------------
# smb.conf is the main Samba configuration file. You find a full commented
# version at /usr/share/doc/packages/samba/examples/smb.conf.SUSE
# Date: 2004-06-30
[global]
   workgroup = MAXENT
   printing = cups
   printcap name = cups
   printcap cache time = 750
   cups options = raw
   printer admin = @ntadmin, root, administrator
   username map = /etc/samba/smbusers
   map to guest = Bad User
   logon path = \\%L\profiles\.msprofile
   logon home = \\%L\%U\.9xprofile
   logon drive = P:
   security = user
   encrypt passwords = yes
   domain logons = no
   ldap idmap suffix = ou=Idmap
   ldap machine suffix = ou=Computers
   local master = yes
   wins server = 
   wins support = no
   add machine script = 
   preferred master = auto
   ldap admin dn = cn=Administrator,dc=site
   ldap suffix = dc=site
[homes]
   comment = Home Directories
   valid users = %S
   browseable = no
   read only = No
   inherit permissions = Yes
   guest ok = no
   printable = no
[profiles]
   comment = Network Profiles Service
   path = %H
   read only = No
   store dos attributes = Yes
   create mask = 0600
   directory mask = 0700
   browseable = yes
   guest ok = no
   printable = no
[users]
   comment = All users
   path = /home
   read only = No
   inherit permissions = Yes
   veto files = /aquota.user/groups/shares/
   browseable = yes
   guest ok = no
   printable = no
[groups]
   comment = All groups
   path = /home/groups
   read only = No
   inherit permissions = Yes
   browseable = yes
   guest ok = no
   printable = no
[pdf]
   comment = PDF creator
   path = /var/tmp
   printable = yes
   print command = /usr/bin/smbprngenpdf -J '%J' -c %c -s %s -u
'%u' -z %z
   create mask = 0600
   browseable = yes
   guest ok = no
[printers]
   comment = All Printers
   path = /var/tmp
   printable = yes
   create mask = 0600
   browseable = no
   guest ok = no
[print$]
   comment = Printer Drivers
   path = /var/lib/samba/drivers
   write list = @ntadmin root
   force group = ntadmin
   create mask = 0664
   directory mask = 0775
   browseable = yes
   guest ok = no
   printable = no
[z]
   comment = shared drive Z
   path = /shared/z/
   writeable = yes
   browseable = yes
   guest ok = yes
   printable = no
   public = yes
-------------- next part --------------
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.300 / Virus Database: 265.8.8 - Release Date: 14.2.2005

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hi Karel,
upgrade samba
ftp://ftp.suse.com/pub/projects/samba/3.0/x86_64/
as well there a perfomance issues known to the webclient service
in win xp , so just stop it.
slow down logging at samba , try set sendfile parameter to no,
read
http://info.ccone.at/INFO/Samba/speed.html
check your nic ,switching, firewalling ( if exist )
try settings like this
[bigshare]
~         path = /home/jeremy/tmp/manyfilesdir
~         read only = no
~  	case sensitive = True
~         default case = upper
~         preserve case = no
~         short preserve case = no
Best Regards
Robert

Karel Rericha schrieb:
| We have two SUSE SLES 9.0 x86-64 servers on gigabit network, one with
| RAID1 and samba 3.0.4,
| and one with RAID10 upgraded to samba 3.0.9. Both have the same problem:
| when you copy from
| server to client, speeds are on big files about 40MB/s for RAID1 and
| about 60MB/s for RAID10.
| But when you copy to server, speed are about 8MB/s. I have set up ftp
| servers on them just to try
| ftp protocol upload, and  it is happy full speed both directions.
|
| After few hours of googling, I found "security = share" hint, which
| didn't help, and after little more
| time "use sendfile  =  yes" hint, which helped little bit, speeds
are
| now 10-12MB/s, but still not
| acceptable.
|
| We don't intend to use samba servers as PDC, but just only as workgroup
| NAS.
|
| Original smb.conf is attached (before security and sendfile tweaking).
|
| One more question: does anybody know good utility to test speed of
| remote volumes ?
|
|
| ------------------------------------------------------------------------
|
| No virus found in this outgoing message.
| Checked by AVG Anti-Virus.
| Version: 7.0.300 / Virus Database: 265.8.8 - Release Date: 14.2.2005
|

- --
Mit freundlichen Gruessen
Best Regards
Robert Schetterer

robert_at_schetterer.org
Munich / Bavaria / Germany
https://www.schetterer.org

\**********************************
\* gnupgp
\* public key:
\* https://www.schetterer.org/public.key
\**********************************
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.5 (MingW32)
Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org

iD8DBQFCFKPN+Jw+56iSjEkRAqy6AKC1+qQab2fw3Wm1xf6+BxP/XFZ3bACfWIMn
l6q8nflxH3nNHojIHV/rbZg=eZ2S
-----END PGP SIGNATURE-----