Extremely Slow Performance on MacOSX
Posted: Sun Oct 01, 2006 4:02 pm
Hello. I've just successfully delivered an xQuery-based project for the defense department. Although I was extremely impressed with oXygen's functionality, its performance was a major hinderance, at times bordering on unusability.
Environment was G5 Imac with 2gB RAM, latest oXygen, with jvm ram allocation incrementally increased to 1.5gB in unsuccessful attempts to improve performance by editing the oxygen plist. The XML input files were excel spreadsheets exported to XML Spreadsheet, the largest being 2.4mb. The xquery was about 4.8K with straightforward xPath, simply converting the inputs to CADM XML.
Symptoms were *long* delays (many minutes; >5) starting a debug run, resuming a run from breakpoints; in fact; on almost every operation. Activity monitor sampling showed many threads active but seemingly blocking in the kernel somewhere. No clear pattern there.
The project is over now, but I'd sure like to know what's going on in case we ever try to use oXygen in the future. Right now, that seems unlikely; this was just too painful to contemplate.
Environment was G5 Imac with 2gB RAM, latest oXygen, with jvm ram allocation incrementally increased to 1.5gB in unsuccessful attempts to improve performance by editing the oxygen plist. The XML input files were excel spreadsheets exported to XML Spreadsheet, the largest being 2.4mb. The xquery was about 4.8K with straightforward xPath, simply converting the inputs to CADM XML.
Symptoms were *long* delays (many minutes; >5) starting a debug run, resuming a run from breakpoints; in fact; on almost every operation. Activity monitor sampling showed many threads active but seemingly blocking in the kernel somewhere. No clear pattern there.
The project is over now, but I'd sure like to know what's going on in case we ever try to use oXygen in the future. Right now, that seems unlikely; this was just too painful to contemplate.