linux-kernel - Re: Overview of concurrency managed workqueue

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Message-ID: <4C1CBC8C.8060004@kernel.org>
Date:	Sat, 19 Jun 2010 14:48:12 +0200
From:	Tejun Heo <tj@...nel.org>
To:	Andi Kleen <andi@...stfloor.org>
CC:	Andy Walls <awalls@...metrocast.net>,
	Daniel Walker <dwalker@...eaurora.org>, mingo@...e.hu,
	linux-kernel@...r.kernel.org, jeff@...zik.org,
	akpm@...ux-foundation.org, rusty@...tcorp.com.au,
	cl@...ux-foundation.org, dhowells@...hat.com,
	arjan@...ux.intel.com, johannes@...solutions.net, oleg@...hat.com,
	axboe@...nel.dk
Subject: Re: Overview of concurrency managed workqueue

On 06/19/2010 02:20 PM, Andi Kleen wrote:
>> * Do machines ever report that many MCE errors?  The usual rate seems
>>   like one per weeks or months even when they're frequent.
> 
> Yes you can even get a flood when the system or parts 
> of the system is dying. There's some throttling in the error handling, 
> but yes in some cases you can get high rates.
> 
>> * If a machine is actually reporting enough errors to overwhelm single
>>   error handling thread, does it even matter what we do?
> 
> There are cases where you can have many errors but still survive.

Alright, adding to todo list.

Thanks.

-- 
tejun
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