http://www.intel.com/software/products/vtune/vlin/
says it works on fedora for UP and SMP kernels "2.4.22-*.nptl (Red Hat Fedora* Core 1) (some limitations)"
Anyone use this software? Know what they mean by "(some limitations)"?
Has it significantly helped performance on any of your projects?
I'm trying to download the Trial but it says I have to wait one business day for some conformation e-mail. So I'm hoping for some stories.
Fedora Core 1 has OProfile, a sampling profiler that also uses the processor's performance monitoring hardware. The SMP kernels have the OProfile support enabled. Install the OProfile rpm in Fedora Core 1, the SMP kernel, and boot the SMP kernel and you should be able to use oprofile to collect profiling data.
The UP kernels do not have OProfile enabled because some laptops have problems with the local apic support. However, there are some laptops that the SMP kernel works fine on.
OProfile has been used to find performance problems in Red Hat applications:
http://people.redhat.com/wcohen/wwc2003/ http://mail.gnu.org/archive/html/classpath/2003-08/msg00004.html
Fixing the performance problems identified by OProfile yielded about 15% reduction in the build time for mozilla on ia64 (wwc2003 paper). In the second URL OProfile identified a significant performance problem in the exception handling library used by gcj and yielded a much faster version of the Eclipse IDE.
-Will
