linux-kernel - Re: 2.6.36 io bring the system to its knees

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Message-ID: <AANLkTi=8uwjAqSmMWbAwX1gGbjS8Q8Rh1mPu7RArdLJt@mail.gmail.com>
Date:	Wed, 10 Nov 2010 19:10:17 +0200
From:	Alexey Dobriyan <adobriyan@...il.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Dave Chinner <david@...morbit.com>, Jens Axboe <axboe@...nel.dk>,
	dave b <db.pub.mail@...il.com>,
	Sanjoy Mahajan <sanjoy@...n.edu>,
	Jesper Juhl <jj@...osbits.net>,
	Chris Mason <chris.mason@...cle.com>,
	Ingo Molnar <mingo@...e.hu>, Pekka Enberg <penberg@...nel.org>,
	Aidar Kultayev <the.aidar@...il.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Nick Piggin <npiggin@...e.de>,
	Arjan van de Ven <arjan@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"Ted Ts'o" <tytso@....edu>, Corrado Zoccolo <czoccolo@...il.com>,
	Shaohua Li <shaohua.li@...el.com>,
	Steven Barrett <damentz@...il.com>
Subject: Re: 2.6.36 io bring the system to its knees

On Wed, Nov 10, 2010 at 6:55 PM, Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
> On Wed, Nov 10, 2010 at 8:46 AM, Alexey Dobriyan <adobriyan@...il.com> wrote:
>> Those of us, who did (without UPS), will never do it again.
>
> Before or after the change to make renaming on top of old files do the
> IO flushing?

It was long ago, so before patch.

> That made a big difference for some rather common cases.

That's good.
Maybe, it's only an order of magnitude likely to lose FS now instead of several.
:-)
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