Date: Thu, 22 Feb 2007 09:08:09 +0100 From: Frank Staals <frankstaals@gmx.net> To: John Nielsen <lists@jnielsen.net> Cc: Martin McCormick <martin@dc.cis.okstate.edu>, freebsd-questions@freebsd.org Subject: Re: vmware Questions Message-ID: <45DD4F69.7090306@gmx.net> In-Reply-To: <200702212350.55348.lists@jnielsen.net> References: <200702220150.l1M1oPVT012406@dc.cis.okstate.edu> <200702212350.55348.lists@jnielsen.net>
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John Nielsen wrote: > On Wednesday 21 February 2007 20:50, Martin McCormick wrote: > >> If one has a FreeBSD system that has 1 gigabyte of RAM >> and a 1-GHZ processor, would it be possible to run a couple of >> vmware instances of FreeBSD? I want to set up a DHCP server on >> each virtual machine and configure one to be optimized for DHCP >> failover and dynamic leases while the other is dedicated to >> static bootp service. It would be much easier for the 2 >> instances of dhcpd to run in separate machines, so to speak, >> since they normally use the same named files for logging and >> configuration. >> >> What sort of a performance hit does one usually see on a >> virtual machine? >> > > Depends a lot on the virtual machine. VMware Server runs VM's pretty > efficiently, but there is a moderate hit. ESX server has almost n > performance penalty. > > >> When we run dhcpd on a normal FreeBSD system of the type >> described above, the system is normally loaded around 0.05 or so >> so it isn't having to work too hard. >> >> Thanks for any help as to what vmware port is best. The >> platform is FreeBSD and the 2 virtual machines will also be >> FreeBSD if that makes any difference. >> > > Modern versions of VMware don't run under FreeBSD. If you really want VMware > then install a supported Linux distro and run VMware server. (Or go out and > buy ESX or GSX server or one of the Workstation products). FreeBSD 6.2 > works great as a guest under most VMware products. > > >> There will be no X windows involved, just hopefully 2 >> DHCP servers running as if they were on two separate boxes. >> >> Any information to point me in the right direction or >> reasons why this is not a good idea are appreciated. >> > > For what you're talking about, jails make a lot more sense than > virtualization or emulation. If you really want to run virtual machines > under FreeBSD, take a look at qemu. qemu (even with the kqemu_kmod port > (highly recommended) definitely has a noticeable performance impact, but > DHCP is so lightweight that it probably won't matter. > > JN > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" > > If the goal is just to run FreeBSD instances inside your virutal machines vmware, qemu, xen etc are all not needed. Use jails instead which would be much faster. -- -Frank Staals
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