Process memory dumps are very efficient sources of information that are used for troubleshooting web sites, which is the reason they are frequently requested by Sitecore Support.
There are various tools that allow collecting the memory dumps of a specific process, based on a user request (on-demand), as well as on a specific event (conditional).
The current article describes the the easiest way to manually gather a full memory dump using the Windows Task Manager application.
For other methods of gathering memory dumps, refer to the following article: