From owner-svn-src-head@FreeBSD.ORG Fri Jul 23 12:30:29 2010 Return-Path: Delivered-To: svn-src-head@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 92CAD106567D; Fri, 23 Jul 2010 12:30:29 +0000 (UTC) (envelope-from ivoras@FreeBSD.org) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c]) by mx1.freebsd.org (Postfix) with ESMTP id 764BF8FC31; Fri, 23 Jul 2010 12:30:29 +0000 (UTC) Received: from svn.freebsd.org (localhost [127.0.0.1]) by svn.freebsd.org (8.14.3/8.14.3) with ESMTP id o6NCUTj8089989; Fri, 23 Jul 2010 12:30:29 GMT (envelope-from ivoras@svn.freebsd.org) Received: (from ivoras@localhost) by svn.freebsd.org (8.14.3/8.14.3/Submit) id o6NCUTdm089988; Fri, 23 Jul 2010 12:30:29 GMT (envelope-from ivoras@svn.freebsd.org) Message-Id: <201007231230.o6NCUTdm089988@svn.freebsd.org> From: Ivan Voras Date: Fri, 23 Jul 2010 12:30:29 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: Subject: svn commit: r210410 - head/sys/kern X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 23 Jul 2010 12:30:29 -0000 Author: ivoras Date: Fri Jul 23 12:30:29 2010 New Revision: 210410 URL: http://svn.freebsd.org/changeset/base/210410 Log: Make lorunningspace catch up with hirunningspace. While there, add comment about the magic numbers. Prodded by: alc Modified: head/sys/kern/vfs_bio.c Modified: head/sys/kern/vfs_bio.c ============================================================================== --- head/sys/kern/vfs_bio.c Fri Jul 23 11:00:46 2010 (r210409) +++ head/sys/kern/vfs_bio.c Fri Jul 23 12:30:29 2010 (r210410) @@ -620,9 +620,14 @@ bufinit(void) hibufspace = lmax(3 * maxbufspace / 4, maxbufspace - MAXBSIZE * 10); lobufspace = hibufspace - MAXBSIZE; - lorunningspace = 512 * 1024; + /* + * Note: The 16 MB upper limit for hirunningspace was chosen + * arbitrarily and may need further tuning. The lower 1 MB + * limit is the historical upper limit for hirunningspace. + */ hirunningspace = lmax(lmin(roundup(hibufspace / 64, MAXBSIZE), 16 * 1024 * 1024), 1024 * 1024); + lorunningspace = roundup(hirunningspace / 2, MAXBSIZE); /* * Limit the amount of malloc memory since it is wired permanently into