SharePoint Performance Tuning

To improve SharePoint Performance, as a site or collection or farm administrator you can:

• Enable Output and Page Caching from Site Admin Page.
• Pre requiste: Enable the Office SharePoint Server Publishing feature from Site Features
• Turn on Http compression and Content Expiration at IIS Level (Browser Caching and content compression)
• Turn on Blob Caching on all WFE Servers, In web.config (look for blobcache and make it true)
• < BlobCache location="C:\blobcache" path="\.(gif¦jpg¦png¦css¦js)$ " maxSize="10" enabled="true" />
• Use Warmup script
• Use SharePoint Dispose Check utility for memory leak
• Can use Ant profiler for memory issues or to find out memory bottlenecks.
• Hardware in the farm                   
• 32 bit vs 64 bit, what is the server memory metrics. Use 64 bit if the memory consumption is more then 50% and you have hit the 4 GB limit on the 32 bit operating system.
• Load test via Visual Studio Team Suite or link
• Collect server metrics using perfmon
• Look for the Network Contention (most common),
•  network in the farm (NIC card, etc)
•  network bandwidth between the farm and client

• Best Development and Coding Practices to avoid slow performance (i.e. performance degradation)
• Custom Code (Object Model)
• SharePoint Farm (Architecture / Hardware / Software)
• Use SQL Profiler to determine if database is the bottleneck