On Fri, 2005-11-25 at 13:25 -0500, Matt Morgan wrote: > On 11/25/05, David Cary Hart <Fedora@xxxxxxxxxxx> wrote: > > This is an exercise in intellectual curiosity. Do I understand the > > concept correctly? > > > > I see two possible applications: > > > > 1) Running instances of FC4 and FC5 beta as virtual machines. > > Does this make sense? > > > > 2) Splitting a server into functional virtual machines. For > > example, an instance running postfix, an instance running httpd > > and an instance for rbldnsd. > > > > a) Does this improve performance? > > b) Is it safe on a production server? > > All your examples are possible. > > I don't think Xen improves performance in any way. It causes less of a > hit than User-Mode Linux, however. http://os.newsforge.com/article.pl?sid=05/11/15/1641244&from=rss Crenshaw said the drive toward virtualization has been further invigorated by data that shows the average server uses between 15% and 25% of its CPU capacity. Virtualization, on the other hand, could improve that to 80% or more, "so you can get more productivity from less hardware," he said, adding that "it comes down to more productivity at less cost. [You can] take advantage of faster, better, cheaper hardware more quickly and without extensive qualification cycles because the software is qualified to the virtual machine rather than the hardware." -- Our DNSRBL - Eliminate Spam: http://www.TQMcube.com/spam_trap.htm Zombie Graphs: http://www.TQMcube.com/zombies.php GeoGraphics: http://www.TQMcube.com/origins.php
