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Re: [PATCH] Fix dwarf2 unwinding through futex functions
- From: Andi Kleen <andi at firstfloor dot org>
- To: Andi Kleen <ak at linux dot intel dot com>
- Cc: Roland McGrath <roland at hack dot frob dot com>, Andi Kleen <andi at firstfloor dot org>, libc-alpha at sourceware dot org
- Date: Tue, 8 Oct 2013 02:28:27 +0200
- Subject: Re: [PATCH] Fix dwarf2 unwinding through futex functions
- Authentication-results: sourceware.org; auth=none
- References: <1378770227-13849-1-git-send-email-andi at firstfloor dot org> <20131007225741 dot GF3363 at tassilo dot jf dot intel dot com> <20131007232243 dot 713F32C067 at topped-with-meat dot com> <20131007234407 dot GG3363 at tassilo dot jf dot intel dot com>
So I ran some benchmarks: just doing an empty lock with:
no icache pollution
artificial icache pollution
articicial icache and branch prediction pollution
comparing the new locks with the old locks.
No difference outside run-to-run variability in either case.
-Andi