Query Resource Semaphore Max Memory

Hi Folks,
I'm on SQL2005 32-bit and am suffering from memory contention problem.
I do have AWE setup for
10485760 kb but it doesn't seem to suffice.
Looking at dm_exec_query_resource_semaphores I see that my queries are queue'ing up to get memory allocated.
Now, of course the correct direction here is to fix the queries that are eating all the resources but this is a very old environment with many bad queries which have just exceeded the tipping point.
What's interesting is that despite having 10GB awe, the column max_target_memory_kb indicates only 750MB.
Is there any way to grant more memory to the semaphore as a temporary solution?
Related topic http://www.mssqltips.com/sqlservertip/2827/troubleshooting-sql-server-resourcesemaphore-waittype-memory-issues.
Thanks,
Lucas

Hi Folks,
I'm on SQL2005 32-bit and am suffering from memory contention problem.
I do have AWE setup for 10485760 kb but it doesn't seem to suffice.
Hi,
Can you post output of
Select @@Version
You have 32 bit system which has biggest limitation of memory. So things get little tricky here. Have you set max server memory, if so how much ?
What do you mean by 'AWE setup for 10' G are you referring to max server memory as AWE set memory ?
AWE behaves differently in 32 bit. Only Data and index pages can use memory allocated by AWE. It actually helps SQL Server to access more memory than its VAS limit.
The biggest problem creator for resource semaphore are Sort and hash joins. Memory grant is memory used to store temporary rows for sort and hash join and query will use this memory till it finishes and resource semaphore is responsible for providing
this memory to query. If resource semaphore is not able to provide memory it puts request in wait list till memory is free so as I see and know only way to resolve is either increase memory or tune query
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Solved!
Go to Solution.

ernest100 wrote:
thanks alot， are there any Definite answer？
The T500 (2242CTO) has 2 memory slots and it will support 8GB of memory in a 2 X 4GB configuration.

Query Resource Semaphore Max Memory

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