linux-kernel - Re: [PATCH 00/19 V2] perf, c2c: Add new tool to analyze cacheline contention on NUMA systems

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Message-ID: <87wqgfawur.fsf@tassilo.jf.intel.com>
Date:	Fri, 28 Feb 2014 10:57:48 -0800
From:	Andi Kleen <andi@...stfloor.org>
To:	Don Zickus <dzickus@...hat.com>
Cc:	acme@...stprotocols.net, LKML <linux-kernel@...r.kernel.org>,
	jolsa@...hat.com, jmario@...hat.com, fowles@...each.com,
	eranian@...gle.com
Subject: Re: [PATCH 00/19 V2] perf, c2c: Add new tool to analyze cacheline contention on NUMA systems

Don Zickus <dzickus@...hat.com> writes:
>
> A handful of patches include re-enabling MMAP2 support and some fixes
> to perf itself.

I would suggest to pursue the lone kernel patch separately. Hopefully
that can be merged soon, once the remainin problems with that are 
addressed.

>
> Comemnts, feedback, anything else welcomed.

As a high level comment, can you add support for CSV mode? 
(-x, in other tools)

I assume most people would data mine the output in some form,
and that's much easier with a more machine oriented format.

Also you should probably have the standard perf conventions
for output fds (--log-fd, --output, default to stderr). otherwise
the output may often be lost.

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only
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