Saturday, February 25, 2012

Buffer Manager on SQl server

I am monitoring my SQL Server. If the server has 2gig of
physical ram and SQL server memory is 1.6G and the SQL
Servver Buffer Manager cache hit ratio is 99, is that
good? If not, what configuration can be done? The server
is very slow at themoment. Thank you.
Jasmine>--Original Message--
>I am monitoring my SQL Server. If the server has 2gig of
>physical ram and SQL server memory is 1.6G and the SQL
>Servver Buffer Manager cache hit ratio is 99, is that
>good? If not, what configuration can be done? The
server
>is very slow at the moment. Thank you.
>Jasmine
Friends,
I just thought I should post this from sp_configure so you
can see how the memory is configured for sql server. It
is set to dynamically configure sql server memory - but
when I run performance monitoring it shows that sql server
consumes too much memory. Please take a look and let me
know if I need to reduce the amount of sql memory or some
key buffer and sort buffer configurations? Thank you very
much.
minimum maximum configure_value run_value
max degree of parallelism 0 32 0 0
max server memory (MB) 4 2147483647 2147483647
2147483647
max text repl size (B) 0 2147483647 65536
65536
max worker threads 32 32767 255 255
media retention 0 365 0 0
min memory per query (KB) 512 2147483647
1024 1024
min server memory (MB) 0 2147483647 0 0
>|||Those numbers are pretty good. SQL is using as much memory as is available
(2GB minus some for OS, overhead, etc. 1.6 is about right). 99% Buffer
cache hit ratio is also good. Until that gets under 95% or so, adding
memory likely won't give a noticable performance boost.
It looks like memory isn't your performance problem. Here is a good
starting point for finding out why your server isn't responding as well as
you need it to.
HOW TO: Troubleshoot Application Performance Issues
http://support.microsoft.com/default.aspx?scid=kb;en-us;298475&Product=sql2k
Geoff N. Hiten
Microsoft SQL Server MVP
Senior Database Administrator
Careerbuilder.com
I support the Professional Association for SQL Server
www.sqlpass.org
"Jasmine Quinlan" <anonymous@.discussions.microsoft.com> wrote in message
news:f64701c43dd2$ff0f0f20$a001280a@.phx.gbl...
> I am monitoring my SQL Server. If the server has 2gig of
> physical ram and SQL server memory is 1.6G and the SQL
> Servver Buffer Manager cache hit ratio is 99, is that
> good? If not, what configuration can be done? The server
> is very slow at themoment. Thank you.
> Jasmine
>|||Geoff,
Thank you so much for your help. I appreciate that.
Jasmine
>--Original Message--
>Those numbers are pretty good. SQL is using as much
memory as is available
>(2GB minus some for OS, overhead, etc. 1.6 is about
right). 99% Buffer
>cache hit ratio is also good. Until that gets under 95%
or so, adding
>memory likely won't give a noticable performance boost.
>It looks like memory isn't your performance problem.
Here is a good
>starting point for finding out why your server isn't
responding as well as
>you need it to.
>HOW TO: Troubleshoot Application Performance Issues
>http://support.microsoft.com/default.aspx?scid=kb;en-
us;298475&Product=sql2k
>
>--
>Geoff N. Hiten
>Microsoft SQL Server MVP
>Senior Database Administrator
>Careerbuilder.com
>I support the Professional Association for SQL Server
>www.sqlpass.org
>"Jasmine Quinlan" <anonymous@.discussions.microsoft.com>
wrote in message
>news:f64701c43dd2$ff0f0f20$a001280a@.phx.gbl...
>> I am monitoring my SQL Server. If the server has 2gig
of
>> physical ram and SQL server memory is 1.6G and the SQL
>> Servver Buffer Manager cache hit ratio is 99, is that
>> good? If not, what configuration can be done? The
server
>> is very slow at themoment. Thank you.
>> Jasmine
>
>.
>

No comments:

Post a Comment