Anthony Green writes: > On x86-64 systems we're building all the java bits as 64-bit. Has > anybody looked at whether or not this is a good idea (vs 32-bit), or is > it just done that way by default? I've thought about it. It's generally a good thing: code generation is generally better for 64-bit AMD64, and we don't run into the horrible 32-bit address space limitations with large numbers of threads. Also, the gc seems to perform a bit better, although that's harder to quantify. On the downside, programs occupy a bit more memory. And, importantly, there hasn't been very much testing of these Java programs on 64-bit gcj. Well, here goes... Andrew.
