linux-kernel - Re: [PATCHv2 00/18] perf tools: Factor ordered samples queue

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Message-ID: <53A323E0.8040307@gmail.com>
Date:	Thu, 19 Jun 2014 11:54:40 -0600
From:	David Ahern <dsahern@...il.com>
To:	Jiri Olsa <jolsa@...hat.com>
CC:	Jiri Olsa <jolsa@...nel.org>, linux-kernel@...r.kernel.org,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...nel.org>,
	Jean Pihet <jean.pihet@...aro.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [PATCHv2 00/18] perf tools: Factor ordered samples queue

On 6/19/14, 4:34 AM, Jiri Olsa wrote:
>> I've skimmed through the patches. What happens if you are in the middle of a
>> round and the max queue size is reached?
>
> half of the queue (time half) is flushed to make some free space

right, I believe there will be scenarios where that will cause failures 
with out of order timestamps.

David
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