Hi,
 
I've noticed this type of issue has been raised a few times, but I
haven't been able to find a solution yet.  
 
I'm having transfer performance issues from various clients to my new
file server :
 
Server config is :
Athlon 3200+ on Nforce 2
Yukon Gb NIC
Gentoo with 2.6.9
samba 3.0.7-r1 ebuild
3Ware Escalade 9500S-12 x 2
Clients are XP SP2,2K3 on similar hardware and G5s with OS X 10.3, all
with Gb NICs on Cat6, and all of which are transferring like dogs ;(
 
smbmount from server to 2003Server transfers ok, but one directory with
~2500 files appears as empty!  Also, my old G4 w/Os X 10.2 is
transferring ok also... go figure.
 
# hdapram -t /dev/sda1
/dev/sda1:
 Timing buffered disk reads:  268 MB in  3.01 seconds =  88.96 MB/sec
 
During transfer smdb reports only 0.7  %cpu or thereabouts.  Various
changes to the socket options have not yielded any results. Winbind is
authenticating ok and I can't see anything in any of the logs which
would indicate a catastrophic problem.
 
smb.conf :
 
[global]
        socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
        netbios name = VAULT
        workgroup = DOMAIN
        realm = DOMAIN.LOCAL
        security = ADS
        password server = dc.domain.local
        wins server = dc.domain.local
        dns proxy = no
        wins proxy = no
        encrypt passwords = yes
        idmap uid = 10000-20000
        winbind enum users = yes
        winbind gid = 10000-20000
        winbind enum groups = yes
        winbind separator = +
        os level = 20
        preferred master = no
        log level = 1
        max log size = 50
        log file = /var/log/samba/log.%m
 
[vault]
        comment = Big Thing
        writeable = yes
        path = /mnt/vault
        force user = vaultuser
        valid users = DOMAIN+"Power Users"
 
Any help would be greatly appreciated.
 
Sincerely,
 
Simon