From owner-cvs-all@FreeBSD.ORG Tue Apr 10 02:35:57 2007 Return-Path: X-Original-To: cvs-all@FreeBSD.org Delivered-To: cvs-all@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 969B216A400; Tue, 10 Apr 2007 02:35:57 +0000 (UTC) (envelope-from pjd@FreeBSD.org) Received: from repoman.freebsd.org (repoman.freebsd.org [69.147.83.41]) by mx1.freebsd.org (Postfix) with ESMTP id 84A3813C4C4; Tue, 10 Apr 2007 02:35:57 +0000 (UTC) (envelope-from pjd@FreeBSD.org) Received: from repoman.freebsd.org (localhost [127.0.0.1]) by repoman.freebsd.org (8.13.8/8.13.8) with ESMTP id l3A2ZvKW041036; Tue, 10 Apr 2007 02:35:57 GMT (envelope-from pjd@repoman.freebsd.org) Received: (from pjd@localhost) by repoman.freebsd.org (8.13.8/8.13.8/Submit) id l3A2ZvdG041035; Tue, 10 Apr 2007 02:35:57 GMT (envelope-from pjd) Message-Id: <200704100235.l3A2ZvdG041035@repoman.freebsd.org> From: Pawel Jakub Dawidek Date: Tue, 10 Apr 2007 02:35:57 +0000 (UTC) To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org X-FreeBSD-CVS-Branch: HEAD Cc: Subject: cvs commit: src/sys/compat/opensolaris/kern opensolaris_kmem.c src/sys/compat/opensolaris/sys kmem.h src/sys/contrib/opensolaris/uts/common/fs/zfs arc.c src/sys/contrib/opensolaris/uts/common/fs/zfs/sys zfs_context.h X-BeenThere: cvs-all@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: CVS commit messages for the entire tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 10 Apr 2007 02:35:57 -0000 pjd 2007-04-10 02:35:57 UTC FreeBSD src repository Modified files: sys/compat/opensolaris/kern opensolaris_kmem.c sys/compat/opensolaris/sys kmem.h sys/contrib/opensolaris/uts/common/fs/zfs arc.c sys/contrib/opensolaris/uts/common/fs/zfs/sys zfs_context.h Log: Try to stabilize ZFS with regard to memory consumption: - Allow to shrink ARC down to 16MB (instead of 64MB). - Set arc_max to 1/2 of kmem_map by default. - Start freeing things earlier when low memory situation is detected. - Serialize execution of arc_lowmem(). I decided to setup minimum ZFS memory requirements to 512MB of RAM and 256MB of kmem_map size. If there is less RAM or kmem_map, a warning will be printed. World is cruel, be no better. In other words: modern file system requires modern hardware:) From ZFS administration guide: "Currently the minimum amount of memory recommended to install a Solaris system is 512 Mbytes. However, for good ZFS performance, at least one Gbyte or more of memory is recommended." Revision Changes Path 1.2 +23 -8 src/sys/compat/opensolaris/kern/opensolaris_kmem.c 1.2 +5 -2 src/sys/compat/opensolaris/sys/kmem.h 1.6 +35 -14 src/sys/contrib/opensolaris/uts/common/fs/zfs/arc.c 1.3 +0 -2 src/sys/contrib/opensolaris/uts/common/fs/zfs/sys/zfs_context.h