linux-kernel - Re: [BUG] perf top: --stdio causes continuous refresh

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Message-ID: <CABPqkBQVdicdgAXob2bHF4hCMTut1LUvbi58a1TVKFT4NDM-=g@mail.gmail.com>
Date:	Thu, 6 Feb 2014 00:12:59 +0100
From:	Stephane Eranian <eranian@...gle.com>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	"mingo@...e.hu" <mingo@...e.hu>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Jiri Olsa <jolsa@...hat.com>,
	Eric Dumazet <edumazet@...gle.com>
Subject: Re: [BUG] perf top: --stdio causes continuous refresh

On Wed, Feb 5, 2014 at 10:25 PM, Stephane Eranian <eranian@...gle.com> wrote:
> Hi,
>
> If you run perf top on 3.14 but you force --stdio mode, perf top
> goes crazy and constantly refreshes the output.
>
> It does that with many older versions of the perf as well on 3.14.
> It runs fine with newt mode.
>
> Works fine with my 3.11 kernel. So something must be broken
> with 3.14.
>
Or more likely, there is something broken in perf which gets exposed
by 3.14.
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