From owner-svn-src-head@FreeBSD.ORG Sat Jan 24 14:25:33 2009 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 3E8291065670; Sat, 24 Jan 2009 14:25:33 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from mail.terabit.net.ua (mail.terabit.net.ua [195.137.202.147]) by mx1.freebsd.org (Postfix) with ESMTP id D424B8FC19; Sat, 24 Jan 2009 14:25:32 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from skuns.zoral.com.ua ([91.193.166.194] helo=mail.zoral.com.ua) by mail.terabit.net.ua with esmtps (TLSv1:AES256-SHA:256) (Exim 4.63 (FreeBSD)) (envelope-from ) id 1LQjNd-0002VG-Ap; Sat, 24 Jan 2009 16:21:01 +0200 Received: from deviant.kiev.zoral.com.ua (root@deviant.kiev.zoral.com.ua [10.1.1.148]) by mail.zoral.com.ua (8.14.2/8.14.2) with ESMTP id n0ODhlQh033737 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Sat, 24 Jan 2009 15:43:47 +0200 (EET) (envelope-from kostikbel@gmail.com) Received: from deviant.kiev.zoral.com.ua (kostik@localhost [127.0.0.1]) by deviant.kiev.zoral.com.ua (8.14.3/8.14.3) with ESMTP id n0ODhlBh008329; Sat, 24 Jan 2009 15:43:47 +0200 (EET) (envelope-from kostikbel@gmail.com) Received: (from kostik@localhost) by deviant.kiev.zoral.com.ua (8.14.3/8.14.3/Submit) id n0ODhlaY008328; Sat, 24 Jan 2009 15:43:47 +0200 (EET) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: deviant.kiev.zoral.com.ua: kostik set sender to kostikbel@gmail.com using -f Date: Sat, 24 Jan 2009 15:43:47 +0200 From: Kostik Belousov To: Tom Rhodes Message-ID: <20090124134347.GC6834@deviant.kiev.zoral.com.ua> References: <200901240146.n0O1kkoZ059726@svn.freebsd.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="4jXrM3lyYWu4nBt5" Content-Disposition: inline In-Reply-To: <200901240146.n0O1kkoZ059726@svn.freebsd.org> User-Agent: Mutt/1.4.2.3i X-Virus-Scanned: ClamAV version 0.94.2, clamav-milter version 0.94.2 on skuns.kiev.zoral.com.ua X-Virus-Status: Clean X-Spam-Status: No, score=-4.4 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=ham version=3.2.5 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on skuns.kiev.zoral.com.ua X-Virus-Scanned: mail.terabit.net.ua 1LQjNd-0002VG-Ap 04b2150e04b0429c89c2ea7a7ee5799a X-Terabit: YES Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r187661 - head/share/man/man7 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: Sat, 24 Jan 2009 14:25:33 -0000 --4jXrM3lyYWu4nBt5 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Jan 24, 2009 at 01:46:46AM +0000, Tom Rhodes wrote: > Author: trhodes > Date: Sat Jan 24 01:46:46 2009 > New Revision: 187661 > URL: http://svn.freebsd.org/changeset/base/187661 >=20 > Log: > Add a comment on kern.ipc.maxpipekva. > =20 > PR: 105997 > Reviewed by: keramida >=20 > Modified: > head/share/man/man7/tuning.7 >=20 > Modified: head/share/man/man7/tuning.7 > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D > --- head/share/man/man7/tuning.7 Sat Jan 24 01:34:22 2009 (r187660) > +++ head/share/man/man7/tuning.7 Sat Jan 24 01:46:46 2009 (r187661) > @@ -23,7 +23,7 @@ > .\" > .\" $FreeBSD$ > .\" > -.Dd November 19, 2007 > +.Dd January 23, 2009 > .Dt TUNING 7 > .Os > .Sh NAME > @@ -402,6 +402,16 @@ In this document we will only cover the=20 > on the system. > .Pp > The > +.Va kern.ipc.maxpipekva > +loader tunable is used to set a hard limit on the amount of pageable > +address space available. The formulation is very misleading. This is *the* KVA for pipe buffers mappings, not *a* pageable KVA. > +This value is auto tuned by the system, but may require manual tuning > +in a few rare cases. > +Increasing this value to a higher setting, such as `25165824' might > +improve performance on systems where pageable address space is > +quickly exhausted. Again, the space for mapping of the pipe buffers. Also, you should note that exhausting of the space is not fatal, and cause pipes to fall back to double-copy. > +.Pp > +The > .Va kern.ipc.shm_use_phys > sysctl defaults to 0 (off) and may be set to 0 (off) or 1 (on). > Setting --4jXrM3lyYWu4nBt5 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (FreeBSD) iEYEARECAAYFAkl7GxMACgkQC3+MBN1Mb4ibhQCgiPu4r80BcBhsG4/ut3qCyze9 QT4An0wIBs/DfN28FxuxgTerNDXU1tZf =Jixi -----END PGP SIGNATURE----- --4jXrM3lyYWu4nBt5--