I'm hosting CouchDB databases on Amazon EC2, and I was wondering if I can have better I/O performance (and better disk utilization, of course) if I use a filesystem that supports compression. I remember reading somewhere that the future versions of CouchDB would support data compression and I was wondering if I could get that feature now if I just compress my filesystem. I am looking at using small instances, but large ones aren't out of the question either. I am afraid the compression would kill the CPU on those instances, but I can't tell until I test that.
Do I sound too crazy? Someone tried that already?