linux-kernel - Re: [2.6.26-rc2-mm1] sync to speed up?

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Message-Id: <20080519002919.1f8f21f6.akpm@linux-foundation.org>
Date:	Mon, 19 May 2008 00:29:19 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	"Dave Young" <hidave.darkstar@...il.com>
Cc:	"kernel list" <linux-kernel@...r.kernel.org>
Subject: Re: [2.6.26-rc2-mm1] sync to speed up?

On Mon, 19 May 2008 15:15:09 +0800 "Dave Young" <hidave.darkstar@...il.com> wrote:

> Hi,
> 
> With 2.6.26-rc2-mm1 I need to sync frequently. It's not normal as my
> understanding.
> 
> 1. scp a big file from a lan server. Firstly the speed is about 8M/s,
> but the speed will slow down to 100K/s at last. After I exec "sync",
> the speed will restore.
> 
> Is this a known issue?
> 

Yes, probably related to the "mkfs takes forever" problem.  I haven't
looked into it yet.  Nor has anyone else afaik.

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