SQL Server Hosting
SQL Server is a relational database management system (RDBMS) from Microsoft that’s designed for the enterprise environment. SQL Server runs on T-SQL (Transact -SQL), a set of programming extensions from Sybase and Microsoft that add several features to standard SQL, including transaction control, exception and error handling, row processing, and declared variables.
Tips for Faster SQL Server Performance
Rapidly declining costs in memory and storage can make it seem attractive to tackle database performance issues by provisioning new hardware. But throwing hardware at slow performance doesn’t always make the database faster. Learn what you can do to assess the true cause of slow performance, and 8 things that will speed performance without new hardware.
REDUCE TRANSACTION LOG WRITES
Transactions can’t commit until the commit record is written to the transaction log. Grouping statements into logically related transactions can improve performance by reducing the waits on transaction log writes.
PUT LOGS, DATA AND TEMPDB ON SEPARATE VOLUMES
Best practice: put logs, data, and tempdb on separate volumes. Even better: Put log and tempdb on fastest volumes.
IMPLEMENT DATA COMPRESSION
Compression not only saves storage space, it also increases the amount of data contained in each IO operation so the number of IOs required is reduced.
SET OPTIMIZE FOR AD HOC QUERIES PARAMETER
With this parameter, the plan is cached the second time the query is executed. Queries executed only once aren’t cached.
CHECK HBA QUEUE DEPTH
To handle bursts in IO, Host Bus Adapters (HBA) have a queue to store IO commands until they can be sent to the SAN controller. Most HBAs default to a queue depth of 16 or 32—usually too small for SQL Server. Try starting with 64, and if that improves performance, then try 128.
SET WINDOWS POWER SAVER TO HIGH PERFORMANCE
Microsoft® Windows® servers can slow down during off-peak usage which can cause performance problems.
Turn on hyperthreading and Check MAXDOP and Cost Threshold for parallelism (often set too low). The right values will depend aon what kind of queries you run.
CHANGE APPLICATION SQL TO USE LESS I/O
It isn’t always possible to change the code or the database design, so also consider tuning indexes.
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