From owner-freebsd-hackers Mon Jul 17 18:53:03 1995 Return-Path: hackers-owner Received: (from majordom@localhost) by freefall.cdrom.com (8.6.10/8.6.6) id SAA04499 for hackers-outgoing; Mon, 17 Jul 1995 18:53:03 -0700 Received: from crh.cl.msu.edu (crh.cl.msu.edu [35.8.1.24]) by freefall.cdrom.com (8.6.10/8.6.6) with ESMTP id SAA04492 ; Mon, 17 Jul 1995 18:53:01 -0700 Received: (from henrich@localhost) by crh.cl.msu.edu (8.6.11/8.6.9) id VAA05107; Mon, 17 Jul 1995 21:53:53 -0400 From: Charles Henrich Message-Id: <199507180153.VAA05107@crh.cl.msu.edu> Subject: Re: File cache needs lower vm priority To: dyson@freefall.cdrom.com (John Dyson) Date: Mon, 17 Jul 1995 21:53:53 -0400 (EDT) Cc: freebsd-hackers@freebsd.org In-Reply-To: <199507172355.QAA01087@freefall.cdrom.com> from "John Dyson" at Jul 17, 95 04:55:51 pm X-Mailer: ELM [version 2.4 PL24] Content-Type: text Content-Length: 751 Sender: hackers-owner@freebsd.org Precedence: bulk > The file cache is about as low in priority as it can be. The pages > in the file cache that are not pointed to by buffers are in the > cache list. Those pages are almost as available as free pages. If > you have any pages in the cache list, then you should not block waiting > for memory. > > It might be that the overhead for the buffer management is getting to > your machine. I am currently working on improving the efficiency, but > on a /66 or faster the overhead should not be a killer. Its on a P100, but w/ a fast SCSI disk. Hopefully with all the new vm chanegs, things will improve dramatically. -Crh Charles Henrich Michigan State University henrich@crh.cl.msu.edu http://rs560.msu.edu/~henrich/