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SQL Server TempDB files on server with NUMA processors

Hi everyone,

We are setting up a new server for SQL Server 2008 R2. The server has 128 GB RAM. When I look in Task Manager, it shows 80 processors. I looked in resource monitor and it shows 4 NUMA sockets with 19 nodes in each socket.

So my question is, how many TempDB files should we configure? Currently we have it at 4 but I'm not sure how to configure with this many / type of CPU. I've not worked with a machine with this type processors before. Since MS basically recommends 1 tempdb file per core, how many should be use? What is the definition of a core in this scenario?

Let me know if you need more information.

Thanks,
Brett

Scott Pletcher

Please post the results of this query:

select *
from sys.dm_os_sys_info

SQLMuse

ASKER

Here you go. Thanks for looking at this for me. Let me know if you have trouble reading it.

cpu_ticks ms_ticks cpu_count hyperthread_ratio physical_memory_in_bytes virtual_memory_in_bytes bpool_committed bpool_commit_target bpool_visible stack_size_in_bytes os_quantum os_error_mode os_priority_class max_workers_count scheduler_count scheduler_total_count deadlock_monitor_serial_number sqlserver_start_time_ms_ticks sqlserver_start_time affinity_type affinity_type_desc process_kernel_time_ms process_user_time_ms time_source time_source_desc virtual_machine_type virtual_machine_type_desc
10421611619980869 3704845082 24 6 25766510592 8796092891136 2176000 2176000 2176000 2093056 4 5 32 832 24 30 14658 3654654821 2012-08-16 02:59:50.927 2 AUTO 12484416 232740153 1 MULTIMEDIA_TIMER 0 NONE

Scott Pletcher

OK, you're only got 4 physical CPUs, so I would create 4 tempdb data files.

SQLMuse

ASKER

OK. Thanks. So each CPU (NUMA core 0, 1, 2, and 3) are physical sockets; each of which has 20 cores? Since the total CPU's reported by Task Manager is 80, is this how the math works out?

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SQLMuse

ASKER

Thanks for you help.