[Samba] much slower backups using smbtar

[Sutto Zoltan]

Hi!

I have moved our samba configuration to a new hardware.
Old config:
    PII  266 MHz
    96MB memory
    RedHat 7.2
    20Gb ide hard drive for samba shares
    samba-*-2.2.7-3.7.2 packages installed
    kernel-2.4.20-28.7

New config:
    P4 2.4GHz
    512MB memory
    RedHat 9.0
    60GB scsi hard drive for samba shares and OS
    40GB ide hard drive for backups
    samba-*-2.2.7a-8.9.0 packages installed
    kernel-2.4.20-28.9

There is a backup script running from cron which create daily incremental
and (full on friday)
backups from samba shares (>6GB/share) using smbtar.

On the new config this script runs much slower. I can not figure it out what
could be the problem.I have recompiled samba-2.2.7a package from srpm but
nothing has
changed. Same with samba-2.2.8a.


Output of backup script on PII config:
    538112 ( 3981.1 kb/s)
     23040 ( 3214.3 kb/s)
     56320 ( 3928.6 kb/s)
     27648 ( 3000.0 kb/s)
    314368 ( 3837.5 kb/s)
     17920 ( 2916.7 kb/s)
    249344 ( 3927.4 kb/s)
     27648 ( 3000.0 kb/s)
     18432 ( 3000.0 kb/s)

Output of backup script on P4 config:
     37888 (  146.2 kb/s)
     63488 (   73.8 kb/s)
     59392 (   92.1 kb/s)
     29184 (   67.9 kb/s)
     24576 (  114.3 kb/s)
     97280 (   74.9 kb/s)
    137216 (   79.7 kb/s)
     56320 (   87.3 kb/s)
     36352 (   84.5 kb/s)
     88451 (   82.3 kb/s)
     96256 (   74.7 kb/s)
     62464 (   72.5 kb/s)
    606180 (   76.2 kb/s)
     21071 (   98.5 kb/s)


Any help would be appreciated.


Thanks

Zoltan Sutto