[Cbe-oss-dev] PS3 performance analysis - errors on loading cellperfctr module

[Geoff Levand]

Arnd Bergmann wrote:
> On Tuesday 11 December 2007, Geoff Levand wrote:
>> The Cell's hardware profiling support is a hypervisor resource, so on PS3
>> you cannot access those resources directly as you can when Linux is running
>> on the raw hardware.  The IBM Cell Blade for example runs without a hypervisor,
>> and it uses cellperfctr.ko.  There currently is no Linux profiling support
>> on PS3 other than the standard oprofile timer based sampling that the
>> generic powerpc code provides.
>> 
>> In general there is a desire to provide some kind of Cell specific profiling
>> support for the PS3, but nothing has been announced.
> 
> What about the stuff at
> http://git.kernel.org/?p=linux/kernel/git/eranian/linux-2.6.git;a=commitdiff;h=0c39912be3f6cc5df13f107354a97f4bd6c96643
> 
> This at least seems to be on a public server. Is that only work in progress,
> or is it usable to some degree?

Yes, it is usable, I didn't know it was released yet.

Yamato-san can you please let us know the status.

-Geoff