Re: VTune

[William C. <wc...@nc...>]

Some features that appear to be new on this this verions of VTune:

-No need to have a second windows machine to do the data analysis.
-Ability to script to do data analysis
-Ability to archive data and do data analysis on another machine

Vtune for Linux requires very specific kernels. VTune is making changes=20
to the sys_call_table entries. On newer kernels Red Hat Linux kernels=20
the "sys_call_table" symbol is not exported. The URL=20
http://www.intel.com/software/products/vtune/vlin/relnotes.htm mentions=20
that it needs to be exported for 2.4.18-17.7.xsmp. This requires a=20
recompile of the code.

This VTune for Linux has a number of things that are unsupported on=20
http://www.intel.com/software/products/vtune/vlin/relnotes.htm:


     *  Java* Language

     * Itanium=AE and Itanium=AE 2

     * SuSE*, Red Hat* Advanced Server* v 2.1, Red Hat* v 8.0 distributio=
ns.

     * Multiple simultaneous users (instead, the usage model is "one=20
user at a time")

     * Pause/Resume APIs

     * Remote Data collection on another machine running on either a=20
Linux* or Windows* operating system.


Their call graph code is implemented via binary rewrites and only=20
instruments basic blocks 5 bytes or large in size. So actually the call=20
graph information is finer grained than function calls. Call graph=20
information is only written out at the normal termination of a program.

-Will


John Levon wrote:
> http://www.intel.com/software/products/vtune/vlin/
>=20
> regards
> john