Link to home
Start Free TrialLog in
Avatar of Zniper
ZniperFlag for South Africa

asked on

Excessive memory usage

Hi

I have a server that is running close to 14gb memory all the time. if you look in task manager you see nothing (memory allocation) , the machine also responds extremely slow.

The Server got Windows 2008R2 sp1 , SQL 2008R2 installed , Cognos 10 (bi)

The Server Specs (esxi 5.1) : 18gb ram , 8 virtual cpu's (vm specs)

Where does all the memory go to ?

User generated imageUser generated imageUser generated imageUser generated imageUser generated image
Avatar of Manjunath Sullad
Manjunath Sullad
Flag of India image

As per your taskbar screenshot, I am able to see that There are 2 Java.exe process are running,

Are you running any Java applications, which application is using 2 process -> If its not required you can Kill one or both process.

Check you have enabled On-Acess Antivirus scanning (Generally its not really required), You an schedule scanning weekly once or twice.
Avatar of Member_2_231077
Member_2_231077

Doesn't make any sense having the AWE checkbox ticked, that's for 32 bit operating systems and 32 bit SQL, probably just gets ignored though rather than doing anything harmful.

I would agree with the above on killing Java off and getting rid of the virus checking, or at least being very careful to exclude the SQL data from the virus checker.
Avatar of Anthony Perkins
I have a server that is running close to 14gb memory all the time.
That is by design.  SQL Server will use all the memory made available to it and not release it.

the machine also responds extremely slow.
You need to find out if SQL Server is the cause and if so what query or queries are causing the problem and optimize them.
I agree with Anthony Perkins, by default SQL will consume all available memory since it wants to try and keep an much information in RAM as possible for faster response times?

Also you are using two high memory usage apps on one server Cognos and SQL.

Is the slow down better or worse durning certain times of the day?
Is the host the VM running on under any type of memory stress?
Is the VM running on a snapshot?
Is AV running on the AV?
In task manager did you select the check box for view "all" process from users?
It will still consume all the RAM even though maximum server memory is set to 6000MB?
ASKER CERTIFIED SOLUTION
Avatar of compdigit44
compdigit44

Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
That was what the same article I was reading before I posted, it's only the buffer pool that's limited but that's what will take every last petabyte of RAM you have if you let it and the lazywriter will only give it up reluctantly.

In this case however it looks like Java and the virus checker have eaten the RAM before MS Squeal got a nibble at it.
Hi,

If by server responding slowly you are referring to the console or other RDP session - its a server not a workstation.

If on the other hand you are referring to how well it is running queries then it could be the query.

On the other hand, several lines down is a svchost process that has an order of magnitude more io reads than anything else. Any chance of finding what this belongs to?

HTH
  David