On Saturday 14 February 2009 17:39:44 Roy Sigurd Karlsbakk wrote: > > We are just about to set up two virtual servers to replace one > > physical. > > Now running Zope, apache, haproxy, varnish, postfix, ++ on quad Xeon > > 3GHz 12 G > > ram, and often struggling during peak traffic. > > I somehow doubt that virtualizing the server will help speed things > up. virtualization will always add overhead, and smp-guests certainly > imposes rather a lot of overhead. I would think the linux schedulers > (at least one of them) are probably better suited to run the load > efficiently than using separate VMs.
We're not virtualizing on the same hardware if that's how you read me. :) I don't know what hardware they will be running on precisely, but there is a SAN, and redundant locations, and I presume CPUs a few years newer than ours, so I don't worry too much. Ram usage, on the other hand, which is now a major billable item, that is a challenge. Zope can be a real hog if you let it.. I guess we're virtualizing for mostly the same reasons as everyone else: outsourcing hardware worries, more flexible expansion path, compartmentalizing some services, etc. etc. > I all pedagogikk er det essensielt at pensum presenteres > intelligibelt. Det er en elementært imperativ for alle pedagoger å > unngå eksessiv anvendelse av idiomer med fremmed opprinnelse. I de > fleste tilfeller eksisterer adekvate og relevante synonymer på norsk. Hvorfor utilisere xenonymer når det finnes adekvate domestikerte substitutter? Gaute -- ubuntu-server mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-server More info: https://wiki.ubuntu.com/ServerTeam
