Re: [PATCH 6/6] perf record: Always store data mmaps

From: Jiri Olsa
Date: Tue Jan 05 2016 - 09:11:20 EST


On Tue, Jan 05, 2016 at 08:16:34PM +0900, Namhyung Kim wrote:
> On Thu, Dec 17, 2015 at 09:26:55PM +0100, Jiri Olsa wrote:
> > Currently we don't synthesize data mmap by default. It depends
> > on -d option, that enables data address sampling.
> >
> > But we've seen cases (softice) where DWARF unwinder went through
> > non executable mmaps, which we need to lookup in MAP__VARIABLE tree.
> >
> > Given the discussion we had with Arnaldo, where he mentioned
> > he wanted to unify MAP__VARIABLE/MAP__FUNCTION anyway, I'm
> > making data mmaps to be synthesized unconditionally.
>
> But I'm afraid of increased data size. Could you check how much is it?

I'll check

jirka
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