Performance issues

[John Malmberg]

"Tim Oakley" <toakley at mailhost.maury-imprimeur.france> wrote:

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> I am using VMS SAMBA v2.0.3 to replace NFS services to PC users. In the
> tests that i have done so far i see some important performance problems
> when the PC is accessing data via SAMBA services, the access times are
> significantly slower than via the original NFS accesses.

The PC client is causing the server to do significantly more work when 
using SMB protocol.

> Are there some tuning tips that i could follow in order to improve the
> access times ?

The SAMBA for OpenVMS Frequently Asked Questions were posted recently on 
this list and on comp.os.vms.  A search of http://www.GOOGLE.com with 
SAMBA and comp.os.vms should turn them up.

> Is SAMBA v2.0.6 'faster'.

I do not know.  I have never run 2.0.3, and I do not know if anyone has 
done a comprehensive benchmark comparing them.

SAMBA v2.0.6 has oplocks implemented and active, and the current 
algorithm will definitely slow things down.  But oplocks can be turned off.

Other than that, there is really not that much different inside the two 
revisions that should have a major effect in the speed.

The tunning tips in the FAQ that was posted should work with most 
versions of SAMBA for OpenVMS.

There has been no feedback posted as to anyone getting improvement from 
following them.

There also can be a lot of factors such as what options are enabled on 
the smb.conf file, how well the OpenVMS system is tuned, and the general 
health of the network.

Currently SAMBA for OpenVMS is significantly slower than the Compaq 
Advanced Server (formerly known as Pathworks) product.  And I do not see 
that changing any time soon.

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-John
wb8tyw at qsl.network
Personal Opinion Only
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