Server optimization of performance tuning methodology

memory management

X86 series CPU,32 Bit operating system

2GB<= Server physical memory <=4GB
Boot.ini add /3GB
4GB<= Server physical memory <=16GB
Boot.ini add /3GB /PAE
Server physical memory >=16GB
Boot.ini add /PAE
SQL Server Enable AWE（4GB Above memory ）

Processors and threads

processor

Processor Association
I/O relation
Maximum number of worker threads
promote SQL Server The priority of the
The default priority is 7, After promotion, the priority is 13
Use only when multiple applications are installed on the server at the same time
Use Windows fibers （ Light pool ）
There are many. CPU Large servers
be-all CPU All of them are running close to the maximum capacity
Content switching (context Switches） Too many times

Dynamic configuration

Add hardware resources when the database server is online

SQL Server How to read data from hard disk

Hard disk related settings

Hard disk

Recovery interval
Database checkpoints (Checkpoint) Frequency of events
The function of checkpoints is to mark the database cache as Dirty The data page and log page of are written to the hard disk

data compression

The main target

Reduce the actual target size of data warehouse

The second goal

Enhance query performance
Can be enabled on a single table or index
Support partition
Need in processor resources and storage and IO Choose between bandwidth
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