All I know is that XEN doesn't crash, where as OpenVZ did suffer from a lot of production stability problems. I've run Virtuozzo, OpenVZ, XEN, VMWare, LVS (which is good, and architectually sound). <br><br>Of those, XEN has required the least fooling and breaks the least of all of them. Performance is secondary to the brittleness many virtualization technologies suffer from in regards to tuning various parameters - you want something that "just works," and if you can afford it, it's hard virtualization like XEN that delivers on that front.
<br><br>I ran large scale hosting for eZ Publish (yea yea) on Virtuozzo and it near about killed me. Had SW-Soft telling us we were, "The most technically demanding customers... [they had]," because we had all kinds of problems with resources that would cause catastrophic failures of systems - I hear its much better now.
<br><br>I think the benchmarks I've done closely match what was posted (on XEN 3.03) in so far as XEN really starts to shine when you have a higher load. We run a number of insanely high performance sites on XEN, including a couple of clusters that use XEN for frontend web servers serving (in a couple of cases) more than 1000 domains a cluster (some of which are very popular) on Drupal. And you know what the problem is with them? MySQL. Hehe, XEN works flawlessly.
<br><br>How did we get on this thread? ;-)<br><br>My 2c.<br><br>Jonathan Lambert<br>WorkHabit<br><br><div><span class="gmail_quote">On 7/9/07, <b class="gmail_sendername">Anton</b> <<a href="mailto:anton.list@gmail.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">
anton.list@gmail.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">On 10/07/07, Ashraf Amayreh <<a href="mailto:mistknight@gmail.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">
mistknight@gmail.com</a>> wrote:<br>> I was actually disturbed when I saw this as my host is a VPS host that uses<br>> OpenVZ. So I did a little search and I'm not so sure this statement is<br>> accurate, not that I really care, but I'd rather be getting the best option
<br>> for my money so I thought I'd point this benchmark out.<br>><br>> <a href="http://community.livejournal.com/openvz/14024.html" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">http://community.livejournal.com/openvz/14024.html
</a><br><br>One thing I noticed about that benchmark (I only had a quick glance)
<br>is that while OpenVZ seemed to handily beat Xen on the low level<br>synthetic benchmarks, Xen seemed to equalise or even slightly beat<br>OpenVZ on the higher level benchmark (siege). You really need to<br>benchmark your actual applications (eg MySQL, Apache, PHP etc) to get
<br>worthwhile data.<br><br>Also Khalid probably used a more recent version of Xen than the one in<br>the OpenVZ benchmark. They used Xen 3.0.2 which was a pretty early<br>immature version of Xen 3.x. Xen 3.1 is supposed to be faster than
<br>3.0.x was.<br><br>--<br>Cheers<br>Anton<br></blockquote></div><br><br clear="all"><br>-- <br>Jonathan Lambert<br>Principal & CEO<br>Email: <a href="mailto:j@firebright.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">
j@firebright.com</a><br>Work: 415-376-7274
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http://www.workhabit.org/</a>