All, I think this is not a good idea to make JIT always work in release mode. I agree that STL performance we have in JIT in debug build is also almost unusable on Windows64bit. I propose learning MSVC2005 STL options and check is we can disable some checks and speedup the JIT. Here is an example of such an option: http://groups.google.co.nz/group/microsoft.public.vc.stl/browse_thread/thread/24426056e5b256ea/0efe8dcc5f3ed97b?lnk=gst&q=debug+performance&rnum=2&hl=en#0efe8dcc5f3ed97b
Right now I can't test it because I run tests on my Windows64bit PC, but I will check this one and other options tomorrow. On 5/22/07, Xiao-Feng Li <[EMAIL PROTECTED]> wrote:
Vladimir, if the testing is really slow, I think it's ok to try the release build on Win64. But I personally prefer to use debug build for other cases if their times are ok, because debug build can help to identify the reasons of any potential breaks. (Or we can use release build for only the JIT module, while keeping other modules in debug build.) Thanks, xiaofeng On 5/22/07, Vladimir Ivanov <[EMAIL PROTECTED]> wrote: > Does it means that we can use only 'release' build for testing while > 'debug' build required more than 10 hours to run DRLVM tests? > > thanks, Vladimir > > On 5/18/07, Mikhail Fursov <[EMAIL PROTECTED]> wrote: > > I think the numbers you mention are from debug build. > > > > The reason of significant compilation time increase when using Windows > > x86_64 is MSVS2005 STL implementation. It does a lot of checks in debug mode > > that MSVS2003 version did not. > > > > > > On 5/18/07, Vladimir Ivanov <[EMAIL PROTECTED]> wrote: > > > > > > Hello everyone, > > > I have a small question about JIT performance on Windows x86_64: why > > > the DRLVM kernel test java.lang.ClassGenericsTest, for example, > > > required in my env: > > > ~20 seconds to finish in the default mode; > > > ~400 seconds to finish in the 'opt' mode; > > > ~2000 seconds to finish in the 'server' mode. > > > > > > I know that this platform was only enabled but may be someone from JIT > > > expert spends some time to improve performance a little bit? > > > > > > Thanks, Vladimir > > > > > > > > > > > -- > > Mikhail Fursov > > > -- http://xiao-feng.blogspot.com
-- Mikhail Fursov
