On the 0x1D4 day of Apache Harmony jingxia xing wrote: > I want to profile some memory access patterns, and try to find out > which are the most hot ones.
Sounds interesting! > BTW, I find that I undefine MACRO USE_FAST_PATH, it will happen with > assert errors (just a HelloWorld application)? Does it mean that > JET must be first used to get some profile information? Yes, exactly. Currently, JET provides entry-backedge profile that is used by OPT. AFAIR, generating profile in OPT is disabled now, but it is the subject to change soon :) I did NOT try to undef USE_FAST_PATH, and this is not what is supposed to be done. We have 'Execution Manager' that decides which JIT to use on a method and in which mode (profile-generating, profile-consuming or no-profile). Try to run VM with options: -Xem opt They tell EM to disable JET. AFAIR, there is no profiling in this mode today. Execution manager can be configured via a simple rule-based config file. Feel free to ask questions on it. BTW, Mikhail Fursov is a great expert of EM. -- Egor Pasko, Intel Managed Runtime Division --------------------------------------------------------------------- Terms of use : http://incubator.apache.org/harmony/mailing.html To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
