We are testing our new clustered server specification, and I found something weird with the performance of the drag n drop functionality.
1. The direct drag n drop upload of the files took too long (a 10 byte file took 10 seconds to upload), we do not encounter any problems if we add the same file with add an activity.
2. When we move around resources in a course, the first move is really quick (100ms), but the following attempts take 3-4-5 seconds (the bigger the course, the longer)
Also tried this from different browsers, and it works fine at the Moolde demo site. Our "old" 2.5 non-clustered server does this in 500ms, every time.
Could you please suggest what we should check, what can cause this behaviour?
4GB RAM, 150 GB disk space