From mboxrd@z Thu Jan 1 00:00:00 1970 From: George Dunlap Subject: Re: Hypervisor architecture? Date: Fri, 7 May 2010 10:05:18 -0500 Message-ID: References: <1273001107.27500.5.camel@etienne-desktop> <1273015225.7760.21.camel@stellar.promisc.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Return-path: In-Reply-To: <1273015225.7760.21.camel@stellar.promisc.org> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: taskstructfromhell@googlemail.com Cc: xen-devel@lists.xensource.com, Etienne Martineau List-Id: xen-devel@lists.xenproject.org On Tue, May 4, 2010 at 6:20 PM, TSFH wrote: > It would also be useful if someone on this list who have read the book > could enlighten the community WRT possible caveats on the book or parts > that no longer resemble the current implementation, as it appears Xen > has changed considerably since the book was released. I haven't read the book, but we have had several people come to the list to try to get help getting the "pluggable scheduler" example from the book working. The two caveats are: * The example code, as it's written in the book, doesn't actually work * The scheduler is actually a lot harder than it looks. It's at one of the very lowest layers. If there's a bug, the whole system hangs (as opposed to just returning an error message). Debugging it takes a lot of skill. So it's not a good place to start playing around with Xen. :-) -George