The lastest nightly builds haven't been working out very well on my machine.
I experienced a golden period with the late 18xx builds through 19xx, where everything ran beautifully and unicorns cavorted in rainbows and moonshine. It was that good, and I salute the work of the plugin developers to get it to that point.
Unfortunately, the 20xx builds so far have had draggier and draggier performance on my machine. I tried increasing the amount of memory allocated to Idea, and in the project modules, tried throwing more memory at the Scala facets in the compiler settings. The load on my Linux box is reasonable (I still have free memory, the disk is not swapping like crazy, CPU usage is not pegged), but the Scala plugin performance remains slow.
Now I am at the point where the syntax highlighters takes about ten seconds to catch up with what I have typed, the import resolver sometimes needs minutes to pop up a suggested import, and today with build 2039 I noticed that Idea had stopped reliably syncing my work to disk (shiver).
Ctrl plus space to get variable completion (or something) causes stack overflows (I filed http://youtrack.jetbrains.net/issue/SCL-2302 about those). The WhiteSpaceAndCommentsProcessor has begun throwing errors too. After my latest restart, the Project Structure dialog box won't come up anymore (which I think someone else already reported as a bug?)
Is anyone successfully using the 20xx nightly builds? Any suggestions?
Idea 9.0.3 EAP IU-95.474
Ubuntu 10.04 (64-bit) with JDK 1.6.0_20
Scala plugin nightly build 0.3.2039