Date: Thu, 30 Aug 2007 13:01:21 +0200 From: Ivan Voras <ivoras@fer.hr> To: freebsd-hardware@freebsd.org Subject: Re: 8GB RAM: PAE or not PAE? Message-ID: <fb682d$rpa$1@sea.gmane.org> In-Reply-To: <20070829174236.6c33ccfc@n2.lands.raad> References: <20070829174236.6c33ccfc@n2.lands.raad>
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[-- Attachment #1 --] err wrote: > 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. If the kernel runs fine, the applications won't notice anything different. I have only one system on PAE, and it works fine, it's a web server and I didn't notice performance problems with it. You'll probably want to try it - save the old kernel, build a PAE kernel, and run it. I think USB is disabled for PAE by default but I didn't encounter problems with it when I enabled it. AFAIK, if a driver is known to work in 64-bit mode, it should also work under PAE. > 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 ? No, the kernel will detect and use the extra memory. Each single process is still limited to 4 GB, of course. [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org iD8DBQFG1qONldnAQVacBcgRA0GUAKCLqxQDML97OetKVnCithxwy95vWACg5wQn 7ggUkBuXevPgs5/NGlzpB+U= =+Y6U -----END PGP SIGNATURE-----help
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