Episerver CMS 6 Slow page load

Hy,

I am developing an Episerver Site, and experiencing a very poor page load speed

Configuration used:

• Amazon AWS Windows Server 2008 R2 Datacenter
• 8 GB RAM, 64 bit op. system
• Microsoft Sql Server 2008 R2
• IIS 7.5

Followed http://world.episerver.com/Blogs/Alexander-Haneng/Dates/2011/12/Starting-CMS-6-R2-sites-faster-after-build/ blog post, but not got a huge performance changing

Also enabled Trace in web.config, and i see in trace.axd that between: Begin Load and End Load there is a huge loading time: 20 seconds sometimes, and not for the first load.

Also having trouble when enabling "Dynamic data cache in IIS" which causes the pages to not load any more, i got error message content encoding error, as i saw this comes from Content-Length Header, that it is not matching the required length.

I am not understanding why takes a page to load in ~4 seconds in general, any help would appreciated, thanks

Without optimization EPiServer can be quite slow at cold start, but serves pages extremely fast unless you run out of memory in the app pool - and you shouldn't with 8 GB of RAM.

Things to check:

• App pool behavior: does CPU spike with every page load? Is the app pool using a lot of physical memory? Are there any memory limits imposed on the app pool?
• On the start page of Admin mode of the site backend there are cache stats. Cache hits should be really high (> 90%) or something is wrong with the cache.
• Are you sure it's server-side lag - what does Developer Tools/Firebug say?
• Have you enabled log4net logging? It can be extremely useful when troubleshooting performance issues. If yes, have you mapped your own configuration file? (we had extreme performance issues from that - use the built-in mapping to episerverlog.config)
• Are you having issues with all templates? What if you create a barebone test template with no master page/main layout view and do nothing but output a property.
• Any suspicious events logged in the event log?