Date: Thu, 30 Aug 2007 18:58:16 +1000 From: Michael Vince <mv@thebeastie.org> To: err <err@tollari.org> Cc: freebsd-hardware@freebsd.org Subject: Re: 8GB RAM: PAE or not PAE? Message-ID: <46D686A8.1090201@thebeastie.org> In-Reply-To: <20070829174236.6c33ccfc@n2.lands.raad> References: <20070829174236.6c33ccfc@n2.lands.raad>
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err wrote: > Hi > > I have an HP DL380 quad core with 8GB of RAM and SAS disks in RAID, with freebsd 6 STABLE on it. > > Everything works fine, except for the RAM addressing problem: freebsd sees only 4GB. > I know it have been discussed, but it could be a problem to me for running a 64bit compiled system; what is the stability of a kernel compiled with the PAE option? > > I've a kernel with no modules, and before trying PAE I would know for other people experiences... > In particular I'm interested in the behavior of ciss, bce, em and usb stuff, and application like Perl, Ruby, PHP 5, MySQL server, heavy MAWK and bzip2 load. > > Also, if I boot a PAE kernel, in order to have all my RAM available, I have to set the hw.physmem variable to 8G ? > > Thanks > -- > Emmanuel Richiardone > I have 2 PAE servers under my control and they work fine one is a Dell 2850, PAE is a little be extra work compared to most FreeBSD setups though but if its working on the hardware you need you should be home. The only reason I used PAE over a AMD64 kernel is because I needed to run stuff that wasn't available on 64 bit, such as Oracle drivers for Perl scripts etc. If I didn't have these needs I would prefer to run AMD64. Mike
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