Sorry: .I can only get about 34xx score if i built chromium by VS2005, but I get 23xx score if I built with VS2008, the performance difference is huge( 34xx vs 23xx)
should be: .I can get about 34xx score if i built chromium by VS2005, but I only get 23xx score if I built with VS2008, the performance difference is huge( 34xx vs 23xx) On Dec 1, 5:49 pm, avcoder <[email protected]> wrote: > Dear: > > Never build chromium by Visual Studio 2008 + SP1, otherwise, you will > get huge performance penalty > ***Visual Studio 2008 C++ code slower than Visual Studio 2005*** > > Please check the following > link:http://social.msdn.microsoft.com/Forums/en-US/vcgeneral/thread/fb3203... > > "In Visual Studio 2008 SP1 (SP1 not RTM) there is a serious bug with / > O2 optimization. One way this bug can be triggered is by upgrading a > project from a previous version. Even though the project setting shows > the release build is set to /O2, the build can be not optimized at > all. To work around it you have to change the setting to no > optimization, apply, and then change it back to /O2. The quick way to > see if this is needed is to check whether the setting for optimization > is in bold or regular - if's it's bold you're OK; if it's regular text > you're not. > > This bug has been reported to Microsoft by many people over the past > few months via the Connect feedback site but every case has been > closed by them without doing anything and for completely invalid > reasons." > > I benchmarked the latest chromium in release version with same > benchmarker tool .I can only get about 34xx score if i built chromium > by VS2005, but I get 23xx score if I built with VS2008, the > performance difference is huge( 34xx vs 23xx) > > It seems that one of the following conclusions is true: > 1) VS2008 + SP1 is broken on /O2 optimization > 2) chromium gyp delivers bad configuration for VS2008(/O2 is ignored) -- Chromium Developers mailing list: [email protected] View archives, change email options, or unsubscribe: http://groups.google.com/group/chromium-dev
