Date: Fri, 24 Jul 2009 11:11:15 -0400 From: Steve Polyack <korvus@comcast.net> To: John Nielsen <lists@jnielsen.net> Cc: freebsd-questions@freebsd.org, Steve Bertrand <steve@ibctech.ca> Subject: Re: VMWare ESX and FBSD 7.2 AMD64 guest Message-ID: <4A69CF13.2000003@comcast.net> In-Reply-To: <200907241022.15985.lists@jnielsen.net> References: <4A68F5CF.8030303@ibctech.ca> <200907241022.15985.lists@jnielsen.net>
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John Nielsen wrote: > On Thursday 23 July 2009 19:44:15 Steve Bertrand wrote: > >> I'd appreciate any feedback on tweaks that I can make (either to VMWare, >> or FreeBSD itself) to make the virtualized environment much more efficient. >> > > See above about storage. Similar questions come up periodically; searching the > archives if you haven't already may prove fruitful. You may want to try > running with different kernel HZ settings for instance. > You should certainly try setting both kern.hz and vfs.read_max in the FreeBSD VM. I would recommend: In loader.conf: kern.hz=100 In /etc/sysctl.conf: vfs.read_max=32 You may also try increasing vfs.hirunningspace. I've had good results with setting it to 32MB on write-intensive systems. Tuning vfs.read_max can give some boosts to physical-hardware FreeBSD systems as well. -Steve Polyack
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