SQL 2012 Memory usage analysis

Question

We have this clustered SQL Server, win 2008 R2 + SQL 2012 Standard SP2,
Server RAM is 64GB, maximum memory is set at 50GB, and minimum memory is set at 10GB.
When I check memory usage, it seems
CLR takes more memory than Buffer Pool, is it normal? Or does it show memory allocation issue? Thanks a lot!
The "total server memory" and "target server memory" performance counters are both 50GB.
Please kindly see below screen shots below:

Answer 1

Hi Vivian,
I would assume you are asking question related to SQL Server 2012 memory the whole discussion would change if it is SQL Server 2008 r2 memory
You are not drawing correct information from first query.
CLR has Reserved 6 G but ONLY committed 12 MB. And that too you are looking at virtual memory which is 6TB for SQL Server process so of course CLR can reserve there is actually no issue with it. A committed memory is actually what SQL Server is using
reserved in simple language is what SQL Server thinks it might need in near future.
As you said Target and total memory are same its good.
For both 2012 and 2008 r2 below query will give total memory utilization by SQL Server instance
select
(physical_memory_in_use_kb/1024)Memory_usedby_Sqlserver_MB,
(locked_page_allocations_kb/1024 )Locked_pages_used_Sqlserver_MB,
(total_virtual_address_space_kb/1024 )Total_VAS_in_MB,
process_physical_memory_low,
process_virtual_memory_low
from sys. dm_os_process_memory
If you want to see Breakdown of memory utilized by various clerks in 2008 r2
select
type,
(SUM(single_pages_kb)/1024) Single_page_allocator_memory,
(SUM(multi_pages_kb)/1024) multi_page_allocator_memory,
(sum(awe_allocated_kb)/1024) [AWE API memory]
from sys.dm_os_memory_clerks
group by type
order by Single_page_allocator_memory desc
For 2012
select type,
(SUM(pages_kb)/1024) as Memory_Utilized
(sum(awe_allocated_kb)/1024) as Memory Allocated by AWE API
from
sys.dm_os_memory_clerks
group by type
order by Memory_Utilized desc
Starting from 2012 Max server memory controls much more than buffer pool
Max server memory controls SQL Server memory allocation, including the buffer pool, compile memory, all caches, qe memory grants, lock manager memory, and CLR memory (basically any “clerk” as found in dm_os_memory_clerks). Memory for thread stacks, heaps,
linked server providers other than SQL Server, or any memory allocated by a “non SQL Server” DLL is not controlled by max server memory
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