[dba-SQLServer] FYI - nVLDB performance

Francisco Tapia fhtapia at gmail.com
Tue Sep 14 12:23:38 CDT 2004


John,
  Thanks for keeping us updated... It seems logical to me since you
are running backups of your data that it may be wise to switch from
FULL loggging to SIMPLE logging now that you're doing Indexes.  This
way you don't log every event.  Additionally restriciting the size of
the log to a specific size will also help speed things along, this way
SQL Server is not tied up w/ useless things such as creating virtual
page files.  In general this is good practice, but in your case it
will be very much more needed.   I've posted as has Eric and I beleive
others, on how to do this, if you don't have the email, let me know
and I'll post again.

as far as trying to use the 4gb, you may want to take a look at
this... this will obviously help speed up performance, because up
until now you've only been using 2gb, and yes Windows 2000 natively
supports 4gb, while XP is restricted to 2gb... why? I dunno. (but
that's one more reason for me to hold on to 2000 a little longer)

http://www.sql-server-performance.com/awe_memory.asp


On Tue, 14 Sep 2004 12:45:32 -0400, John W. Colby
<jwcolby at colbyconsulting.com> wrote:
> Just to let you know some numbers on the database as it currently stands.
> 
> First, I have two almost identical machines which I built to hold and
> manipulate the database.  Both machines use an MSI K8N Neo motherboard with
> built in 4 port SATA and dual channel IDE, gbit LAN.  The processor is the
> 754 pin Athlon64 at 3ghz.  The server currently has Windows 2K and 3g RAM
> installed.  Apparently Win2K can use up to 4g ram whereas XP is limited to
> 2g.  Unfortunately I cannot persuade SQL Server to use more than 2g RAM so I
> am not sure that more memory than that is really useful in this context.
> 
> The server then has (4) 250g Maxtor SATA drives and (1) 250g Maxtor IDE
> drive holding the data files and the log file respectively.  The second
> machine is currently running XP Pro.  Since the two new machines have gbit
> nics built into the motherboard I bought an 8 port gbit switch so they could
> talk at full speed.  In general I have found that I can run operations from
> the second machine to the server over gbit LAN at close to full speed, i.e.
> the LAN is not a severe bottleneck anymore (it definitely was at 100mbit).


-- 
-Francisco



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