I've found Intel's manual about VTune support for JIT code: http://software.intel.com/file/6737
VTune doesn't support code moves and deletes. It seems easy to support sampling mode (the same way as for OProfile.), this should work for Linux and Windows. As for call graph (instrumentation) mode, more work will be required to implement enter / leave calls from code generated by V8. On Wed, Mar 24, 2010 at 14:13, Mikhail Naganov <[email protected]> wrote: > Hi Evgeny, > > I implemented support for reporting JIT-ted code to OProfile (see > http://code.google.com/p/v8/wiki/V8Oprofile). I can help with an > analogous support for VTune (I didn't know it supports this). > > Grep V8 sources for OProfileAgent. As for OProfile, it doesn't support > code moves and deletes, so V8 needs to be run with them disabled. If > VTune supports them, I can point where you need to insert > instrumentation. > > On Wed, Mar 24, 2010 at 13:52, Evgeny Astigeevich <[email protected]> wrote: >> Thank you for advice. Moved discussion to v8-dev. >> >> As I know VTune supports Java and .Net applications by default. Other >> VMs should communicate with VTune via JIT Profiling API. >> Is anyone interested in VTune support in V8? >> >> Best regards, >> Evgeny Astigeevich >> >> On Mar 23, 5:50 pm, Kevin Millikin <[email protected]> wrote: >>> This question might be better answered on the v8-dev mailing list. >>> >>> The disassembly from --print-code includes a section at the end of a >>> function's code which is labeled "RelocInfo". There are "position" and >>> "statement position" entries with an address (in the generated code) and a >>> zero-based character offset from the start of the script containing the >>> function. >>> >>> A better way to do it would be to try to use VTune's JIT profiling support. >>> I've never used it so I don't know how well it would work. There are hooks >>> for oprofile support that you can look for in the code. >>> >>> On Tue, Mar 23, 2010 at 3:32 PM, Evgeny Astigeevich >>> <[email protected]>wrote: >>> >>> >>> >>> > Hello, >>> >>> > I am analyzing performance of V8 by using VTune. I run 'shell.exe with >>> > '--print_code'' and merge VTune data with '--print_code' dump. >>> > How can I get information about correspondence between machine code >>> > and JS source line numbers? >>> > I need the information to figure out which JS constructions cause CPU >>> > stalls. >>> >>> > Best regards, >>> > Evgeny Astigeevich. >>> >>> > -- >>> > v8-users mailing list >>> > [email protected] >>> >http://groups.google.com/group/v8-users >>> >>> > To unsubscribe from this group, send email to v8-users+ >>> > unsubscribegooglegroups.com or reply to this email with the words "REMOVE >>> > ME" as the subject. >> >> -- >> v8-dev mailing list >> [email protected] >> http://groups.google.com/group/v8-dev >> >> To unsubscribe from this group, send email to >> v8-dev+unsubscribegooglegroups.com or reply to this email with the words >> "REMOVE ME" as the subject. >> > -- v8-dev mailing list [email protected] http://groups.google.com/group/v8-dev To unsubscribe from this group, send email to v8-dev+unsubscribegooglegroups.com or reply to this email with the words "REMOVE ME" as the subject.
