linux-kernel - Re: [PATCH V7 1/1] perf tool:perf diff support for different binaries

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20150226203404.GF27767@tassilo.jf.intel.com>
Date:	Thu, 26 Feb 2015 12:34:04 -0800
From:	Andi Kleen <ak@...ux.intel.com>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:	kan.liang@...el.com, jolsa@...hat.com, namhyung@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH V7 1/1] perf tool:perf diff support for different binaries

> Having a nice explanation of the problem helps, as my first reaction to
> this patch was: "What? This is what this tool is supposed to do, to
> compare two versions of a binary, one that is being developed from the
> same source, the other with slight modifications, etc", while the
> description of the patch made it look as this was a feature that was now
> being introduced.

AFAIK it was actually to compare multiple runs of the same binary
with different setups: e.g. varying number of threads.

However in the Linux kernel development world it turns out comparing
multiple similar binaries is much more useful.

-Andi
-- 
ak@...ux.intel.com -- Speaking for myself only
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/