I am running 5.1 build #4155 and am seeing slow JSP editing performance. I found a number of threads related to this and was wondering if anyone else is still having this issue?
I see sluggish editor performance on a number of JSP files, one in particular is mostly HTML with two JSP includes (common header and footer nothing complex) and around 500 lines. Basically, what has been reported before. When hitting return, there is a noticeable delay before a new line is inserted. If I say hit return five or six times in rapid succession, one new line is inserted followed by IDEA sort of freezing for a few seconds and then catching up with the other new lines.
I have Hector looking the other way with all highlight options off.
As a test I took 690 line HTML file and opened it. Performance was acceptable. I renamed it as a JSP file, opened it and found the editor sluggish once more.
Before you ask, I am running Solaris x86 on a dual Opteron with 4GB of RAM. A CPU profile is not possible on this OS as IDEA will not start with this enabled.