On Thu, Aug 29, 2013 at 07:15:00PM +0200, Jean Pihet wrote: SNIP
> > The problem is that it is slow as hell (couple of minutes to report > the callchain from a simple test app ;-|). I will look at the sampling > rate and the caching next. FYI there's elfutils alternative grewing now via libdw providing API to do the 'remote unwind' as in libunwind. I'm not completely sure, but I think it should support both .eh_frames and .debug_frames. check: git://git.fedorahosted.org/git/elfutils.git branch jankratochvil/unwindx86 the 'tests/backtrace-data.c' should be an example of what we want in perf somewhere I should have perf changes to support this in early version which no longer relevant.. but I recall it was substantially faster due to some libdw inner caching it's on my long term TODO list, so any help is welcome! ;-) jirka -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
