Date: Wed, 2 Sep 2009 17:28:21 +0200 From: Mel Flynn <mel.flynn+fbsd.current@mailing.thruhere.net> To: freebsd-current@freebsd.org Cc: Alexander Motin <mav@freebsd.org>, "Derek \(freebsd lists\)" <482254ac@razorfever.net> Subject: MAXPHYS and physical memory (Was: Re: siis/atacam/ata/gmirror 8.0-BETA3 disk performance) Message-ID: <200909021728.21566.mel.flynn%2Bfbsd.current@mailing.thruhere.net> In-Reply-To: <4A9E8677.1020208@FreeBSD.org> References: <h7lmvl$ebq$1@FreeBSD.cs.nctu.edu.tw> <4A9E8677.1020208@FreeBSD.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On Wednesday 02 September 2009 16:51:35 Alexander Motin wrote: > For maximum linear I/O performance you may want to build kernel with > options MAXPHYS=(1024*1024) I've found that just doubling the default MAXPHYS already panics-on-boot a 1.5GB i386 system. Is there any reasonable conversion table for MAXPHYS to physical memory, since various memory related kernel setups are derived from or calculated with MAXPHYS? -- Mel
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200909021728.21566.mel.flynn%2Bfbsd.current>