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Re: [PATCH] bump up nr_to_write in xfs_vm_writepage

To: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Subject: Re: [PATCH] bump up nr_to_write in xfs_vm_writepage
From: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
Date: Tue, 7 Jul 2009 19:33:04 +0900 (JST)
Cc: kosaki.motohiro@xxxxxxxxxxxxxx, Olaf Weber <olaf@xxxxxxx>, Eric Sandeen <sandeen@xxxxxxxxxx>, xfs mailing list <xfs@xxxxxxxxxxx>, linux-mm@xxxxxxxxx, "MASON, CHRISTOPHER" <CHRIS.MASON@xxxxxxxxxx>
In-reply-to: <20090707101946.GB1934@xxxxxxxxxxxxx>
References: <bzyd48cc14d.fsf@xxxxxxxxxxxxxxxxxxxx> <20090707101946.GB1934@xxxxxxxxxxxxx>
> On Tue, Jul 07, 2009 at 11:07:30AM +0200, Olaf Weber wrote:
> > If the nr_to_write calculation really yields a value that is too
> > small, shouldn't it be fixed elsewhere?
> 
> In theory it should.  But given the amazing feedback of the VM people
> on this I'd rather make sure we do get the full HW bandwith on large
> arrays instead of sucking badly and not just wait forever.

At least, I agree with Olaf. if you got someone's NAK in past thread,
Could you please tell me its url?




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