[dba-SQLServer] SQL Server compression

Francisco Tapia fhtapia at gmail.com
Mon Sep 12 16:19:55 CDT 2011


very cool indeed!

-Francisco
<http://bit.ly/sqlthis>

On Sun, Sep 11, 2011 at 5:34 AM, jwcolby <jwcolby at colbyconsulting.com>wrote:

> I dropped in 4 more dimms and my GeekBench score is now 15K.  However CPUZ
> is still saying that my memory is dual channel instead of quad channel.  I
> have the correct sockets populated per the motherboard manual, 4 dimm
> sockets per cpu sockets.  I sure would like to figure that one out.
>
> In any event I now have 3 processors and 8 gigs assigned to Windows 2008
> and 13 processors and 56 gigs assigned to SQL Server.
>
> As I mentioned the other day I moved to page compression for all of my
> major databases and while I do not know how it all works exactly but I now
> have enough memory to have the two databases that I normally pull data from
> for orders fit entirely into memory.  One database is 35 gigs and the other
> is 15 gigs.  Supposedly the data is compressed and stored on disk.  Then it
> is loaded off od disk and stored in memory compressed.  At the instant that
> it is used, the data is uncompressed and any resulting data recompressed (if
> storing) back into memory and from there back to disk.  From my readings
> this requires more cpu power but less memory and less disk I/O.
>
> In my case I link these two databases by a KP/FK and pull sets of data
> which is written back out to a different (order) order database.  The
> business is very very different with cheap powerful hardware.
>
> Thank you AMD.
>
>
> John W. Colby
> www.ColbyConsulting.com
>
> On 9/5/2011 1:30 PM, jwcolby wrote:
> > BTW I found something called GeekBench which I ran on my machine. It is
> the only thing I have found
> > that is a reasonable cost ($13) to give me numbers to compare to others.
> My Geekbench number is
> > ~13,500, and it pointed out to me that I am currently running the server
> with 1/2 of the memory
> > "bandwidth" I could be getting (the biggest reason I am adding more).
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