Date: Sat, 27 Mar 2004 19:36:38 -0800 From: Kris Kennaway <kris@obsecurity.org> To: Peter G <pg@eth1.com> Cc: freebsd-questions@freebsd.org Subject: Re: PAE, mem available to user? Message-ID: <20040328033638.GA34446@xor.obsecurity.org> In-Reply-To: <20040328000618.6559.qmail@web9701.mail.yahoo.com> References: <20040328000618.6559.qmail@web9701.mail.yahoo.com>
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--Q68bSM7Ycu6FN28Q Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Mar 27, 2004 at 04:06:17PM -0800, Peter G wrote: > hi all, read thru the archives, esp thru thread: "PAE > testing results ..." from circa May 03. >=20 > I am getting a diffrent problem on a uniProc machine. > with 5.2.1 and a stock PAE build. >=20 > machine is stable and does not crash, but the big mem > user job we want to submit to it, all these jobs die > when they start using about 400MB of mem, swap doesn't > activate. the user submitted job just core dumps. > With previous 4.5 FBSD machines with the following > kernel options compiled in (before PAE days) on same > machine w/same 1.5GB of physical mem and plenty of > swap, we'd get 1.2GB of usable mem for user job and > rest would be kernel space. Job would run but not > satisfactory, thought modern PAE would be a better > bet. >=20 > The kernel options we had used w/ 4.5 back then were: > options MAXDSIZ=3D"(1664*1024*1024)" > options DFLDSIZ=3D"(1664*1024*1024)" PAE is for addressing >4GB of memory; since you only have about 1.5GB, that's not applicable. You'll need to include more details about your system and kernel configuration, including error messages showing what is going wrong. Kris --Q68bSM7Ycu6FN28Q Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (FreeBSD) iD8DBQFAZkhGWry0BWjoQKURAtvwAJ4sfAMT4BTVfncF6BggIBLREatlvQCguZ6j fx+hgkM+OBT+WGTfCkVuBpg= =8tJW -----END PGP SIGNATURE----- --Q68bSM7Ycu6FN28Q--
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