Portage only has sys-apps/perfctr 2.7.18. According to the author, --------------------------------------------------------------------- Version 2.7.20 of perfctr, the Linux performance monitoring counters kernel extension, is now available at the usual place: http://www.csd.uu.se/~mikpe/linux/perfctr/2.7/ This is a kernel update release, to provide continued ppc64 support to the PAPI and IBM folks. The x86, x86-64, and ppc32 architectures are NOT supported in the perfctr-2.7 branch: for those, please use the perfctr-2.6 branch instead. --------------------------------------------------------------------- So Portage has an old version of perfctr, and one that only works on PPC 64. The correct version for the other architectures is the recently-announced 2.6.23: --------------------------------------------------------------------- Version 2.6.23 of perfctr, the Linux performance monitoring counters kernel extension, is now available at the usual place: http://www.csd.uu.se/~mikpe/linux/perfctr/2.6/ Regarding Intel's Core processors: Intel's documentation states that each EVNTSEL has its own enable bit, just like P4s and AMD's processors. However, testing done by the PAPI folks indicate that Intel Core 2 has a single master enable bit in EVNTSEL0, just like previous P6 processors. For now, perfctr follows the traditional P6 rules for Intel Core CPUs. Version 2.6.23, 2006-08-20 - Intel Core 2 fixes: detect Core2 processors (Model 15) and allow them to be used in 64-bit builds. - Updated kernel support: 2.6.18-rc4, 2.6.17, 2.6.9-34.0.2.EL (RHEL4), 2.4.33, 2.4.34-pre1, and 2.4.21-47.EL (RHEL3). - The update-kernel script is now able to automatically identify SuSE Linux kernel versions. A SuSE kernel MUST be configured (".config" exists) for the identification to work. / Mikael Pettersson
ok, this raises a difficult question. upstream says to only use perfctr-2.7 for ppc64, and perfctr-2.6 for every other architecture. I'm assuming that they are talking about hardware - so in my case, I have ppc64 hardware, running a 32-bit userland. Can anybody see an easy way to enforce 2.7 usage on ppc64 hardware? KEYWORDS="~ppc64 ~ppc" is obviously the first part, but any ideas on a good check that the hardware is sane?
well.. I would like to add ~ppc64, but I don't know what this programm does and just running it does not realy help ;-) (gcc41) power1 ~ # perfex perfctr_abi_check: No such file or directory perfex: open perfctrs: Illegal seek (gcc41) power1 ~ # perfex --help perfctr_abi_check: No such file or directory perfex: open perfctrs: Illegal seek (gcc41) power1 ~ #
znmeb/ppc: actually, I've just taken a harder look at this again, and I realized that while it was present in older -mm kernels, it has been dropped in favour of perfmon. http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.13/2.6.13-mm3/announce.txt http://sourceforge.net/mailarchive/forum.php?thread_id=8102899&forum_id=2237 In line with this, I'm going to be dropping it from the tree (I originally added it to the tree because I was using it on old -mm kernels).
(In reply to comment #3) > znmeb/ppc: actually, I've just taken a harder look at this again, and I > realized that while it was present in older -mm kernels, it has been dropped in > favour of perfmon. > > http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.13/2.6.13-mm3/announce.txt > http://sourceforge.net/mailarchive/forum.php?thread_id=8102899&forum_id=2237 > > In line with this, I'm going to be dropping it from the tree (I originally > added it to the tree because I was using it on old -mm kernels). > $ esearch -Snv perfmon $ esearch -Fnv perfmon I guess I should file an enhancement bug to get "perfmon" in Portage now. :) DreamSong ~ #
# Robin H. Johnson <robbat2@gentoo.org> (3 Oct 2006) # Bug 144560 # Upstream discontinued perfctr last year, in favour of perfmon: # http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.13/2.6.13-mm3/announce.txt # http://sourceforge.net/mailarchive/forum.php?thread_id=8102899&forum_id=2237 # It was only available in mm kernels, up to 2.6.13-mm2. # Scheduled for removal on 2006/11/03 sys-apps/perfctr Please, remove.
