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Re: [Xen-devel] [Patch] Buffer disk I/O requests


  • To: "Han, Weidong" <weidong.han@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: Keir Fraser <keir@xxxxxxxxxxxxx>
  • Date: Mon, 14 May 2007 13:24:22 +0100
  • Delivery-date: Mon, 14 May 2007 05:22:56 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AceWC1RtzMJy5K2DTwGmXANjr/voFgAF3jWk
  • Thread-topic: [Xen-devel] [Patch] Buffer disk I/O requests

What sort of improvement does it achieve? It's a pretty hacky thing to have
to add... :-(

 -- Keir


On 14/5/07 10:36, "Han, Weidong" <weidong.han@xxxxxxxxx> wrote:

> Disk I/O of VM is slow compared to native, I/O port access consumes time
> significantly, which could be partly improved with buffered I/O.
> The attached patch partly improves the performance of disk I/O through
> buffering Disk I/O requests.
>  
> Signed-off-by: Zhiteng Huang <zhiteng.huang@xxxxxxxxx>
> Signed-off-by: Weidong Han <weidong.han@xxxxxxxxx>
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel


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