From mboxrd@z Thu Jan 1 00:00:00 1970 From: aq Subject: Re: Xen and VMware Date: Thu, 17 Feb 2005 11:40:18 +0900 Message-ID: <9cde8bff05021618401c7efe29@mail.gmail.com> References: <31F19452BA8B2042A359D849B74B1BF00C02B0@aklexch01.nsp.local> <4213CE2F.9040300@diku.dk> Reply-To: aq Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit In-Reply-To: <4213CE2F.9040300@diku.dk> Sender: xen-devel-admin@lists.sourceforge.net Errors-To: xen-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: Jacob Gorm Hansen Cc: Tom Hibbert , Tim Freeman , xen-devel@lists.sourceforge.net List-Id: xen-devel@lists.xenproject.org On Wed, 16 Feb 2005 14:50:23 -0800, Jacob Gorm Hansen wrote: > Tom Hibbert wrote: > > Typical corporate talking head blah. Interesting that he talks about > > Vmotion as a 'killer technology' when Xen is already doing it. > > If you read the interview there's quite a bit of Xen-bashing. The guy > > rags on the requirement for modification of the host kernel. He is > > comparing the two products as if they took the same approach, failing to > > mention that Xen's paravirtualisation architecture eliminates all of the > > costly performance overhead his company's product is famous for... > > I still think you need to respect VMWare for breathing new life into > virtual machine research. And I still think Xen can be improved (as is > happening now) with regards to memory footprint etc. VMWare ESX is also > likely to have some performance benefits from having the drivers in the > kernel, even though that comes at the cost of them having to implement > the drivers themselves. And the fact that they can host Windows is a big > win with lots of customers. > > VMWare does some amount of paravirtualization, with all the VMWare tools > that you need to install. In fact, Xen seems to be going in VMWare's > direction (shadow page tables, writable page tables, binary rewriting, > Vanderpool support) in some areas. Jacob, I am surprised here. Which code in Xen that does "binary rewriting"? Thank you, AQ ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click