This is a guess, but you can investigate it.
Look at the cache hit pct in "q db f=d". If it is less than 98% you should
increase the BUFPOOLSIZE (in dsmserv.opt on AIX, not sure about OS/390; you
need to restart the *SM server after changing the file).
We had 80% hits on one of our servers, increased the bufpoolsize from 8000K
to 32000K and got a fantastic improvement for cases where there were many
files.

Jonathan  Shalev
IDC Computing / Systems Engineering
UNIX Server Platforms
Intel Israel (74) Ltd.
Jonathan.Shalev AT intel DOT com
Phone: +972-4-865-6588, Fax: +972-4-865-5999



> -----Original Message-----
> From: Thomas Denier [mailto:Thomas.Denier AT MAIL.TJU DOT EDU]
> Sent: Wednesday, November 01, 2000 11:49 PM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: Export performance
>
>
> I have been running an 'export node' command with
> 'filedata=backup' for a
> client system with about 4.5 million backup files. One of the
> file systems
> accounts for almost 1.4 million of these. The export process
> has processed
> about 85,000 files in four hours, and has slowed down to
> about 2 files per
> second. There are no other processes or sessions competing
> for access to the
> database. We have 3.1.2.50 server running under OS/390. Is
> there any way to
> get the export to run at a reasonable speed?
>