Showing posts with label memory. Show all posts
Showing posts with label memory. Show all posts

Thursday, June 14, 2012

Memory Utilization and .NET Applications

When thinking about launching an .NET application with IIS, memory tuning the webserver is often ignored. I often complained about how php.ini offered more straightforward means to address performance tuning - but I was wrong.

Windows Server reserves half of its available RAM for the operating system. Of the remaining RAM, by default IIS will only allow 60% to be allocated to applications (in v1.0 I think it was actually 40%, in later versions its more generous). This setting is configurable, and can be set in your machine.config of the relevant framework path (%system%Microsoft.NET\Framework\) by adjusting the memoryLimit parameter. I recommend not reserving more than 80%.

There is a ton to do here, and more than I can address in one post. Benchmarking these settings in development is a necessity, so do the needful and check out this overview here:

RAT Bastard

Earlier this week, several servers I maintain were targeted by automated attempts to upload a remote access trojan (RAT). The RAT is a simpl...