On Wed, Nov 13, 2013 at 12:50:21PM +0100, Ingo Molnar wrote: > > * Peter Zijlstra <[email protected]> wrote: > > > On Tue, Nov 12, 2013 at 10:11:21PM +0100, Ingo Molnar wrote: > > > > > > * David Ahern <[email protected]> wrote: > > > > > > > > Dunno.. it _should_ all work. Try it and see what it does.. Once the > > > > > events are bigger than a page things might get 'interesting' though. > > > > > > Which could be the case with call-graph recording, right? > > > > Not typically, I think we're limiting call graphs to 127 u64, which is > > ~1k. Maybe you can blow the single page if you also do a large > > top-of-stack copy for dwarf/unwind nonsense. > > What I meant was dwarf style call graph recording:
Ah, one of those things I've never yet used ;-) > tools/perf/builtin-record.c: const unsigned long > default_stack_dump_size = 8192; > > Doesn't that mean 8K+ events? Oh yes.. that's ideal to trigger this. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
