From owner-freebsd-arch@FreeBSD.ORG Wed Aug 24 16:18:54 2011 Return-Path: Delivered-To: arch@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 9CB041065672 for ; Wed, 24 Aug 2011 16:18:54 +0000 (UTC) (envelope-from bzeeb-lists@lists.zabbadoz.net) Received: from mx1.sbone.de (mx1.sbone.de [IPv6:2a01:4f8:130:3ffc::401:25]) by mx1.freebsd.org (Postfix) with ESMTP id 4C5188FC16 for ; Wed, 24 Aug 2011 16:18:54 +0000 (UTC) Received: from mail.sbone.de (mail.sbone.de [IPv6:fde9:577b:c1a9:31::2013:587]) (using TLSv1 with cipher ADH-CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by mx1.sbone.de (Postfix) with ESMTPS id 4B25525D38A4; Wed, 24 Aug 2011 16:18:53 +0000 (UTC) Received: from content-filter.sbone.de (content-filter.sbone.de [IPv6:fde9:577b:c1a9:31::2013:2742]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.sbone.de (Postfix) with ESMTPS id 7DEE1BD3CD9; Wed, 24 Aug 2011 16:18:52 +0000 (UTC) X-Virus-Scanned: amavisd-new at sbone.de Received: from mail.sbone.de ([IPv6:fde9:577b:c1a9:31::2013:587]) by content-filter.sbone.de (content-filter.sbone.de [fde9:577b:c1a9:31::2013:2742]) (amavisd-new, port 10024) with ESMTP id zZQ5lGaIwmRS; Wed, 24 Aug 2011 16:18:51 +0000 (UTC) Received: from orange-en1.sbone.de (orange-en1.sbone.de [IPv6:fde9:577b:c1a9:31:cabc:c8ff:fecf:e8e3]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by mail.sbone.de (Postfix) with ESMTPSA id 003F1BD3CD7; Wed, 24 Aug 2011 16:18:50 +0000 (UTC) Mime-Version: 1.0 (Apple Message framework v1084) Content-Type: text/plain; charset=us-ascii From: "Bjoern A. Zeeb" In-Reply-To: <132388F1-44D9-45C9-AE05-1799A7A2DCD9@neville-neil.com> Date: Wed, 24 Aug 2011 16:18:49 +0000 Content-Transfer-Encoding: quoted-printable Message-Id: References: <132388F1-44D9-45C9-AE05-1799A7A2DCD9@neville-neil.com> To: George Neville-Neil X-Mailer: Apple Mail (2.1084) Cc: arch@freebsd.org Subject: Re: Updating our TCP and socket sysctl values... X-BeenThere: freebsd-arch@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussion related to FreeBSD architecture List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 24 Aug 2011 16:18:54 -0000 On Mar 19, 2011, at 6:37 AM, George Neville-Neil wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 >=20 > Howdy, >=20 > I believe it's time for us to upgrade our sysctl values for TCP = sockets so that > they are more in line with the modern world. At the moment we have = these limits on > our buffering: >=20 > kern.ipc.maxsockbuf: 262144 > net.inet.tcp.recvbuf_max: 262144 > net.inet.tcp.sendbuf_max: 262144 >=20 > I believe it's time to up these values to something that's in line = with higher speed > local networks, such as 10G. Perhaps it's time to move these to 2MB = instead of 256K. >=20 > Thoughts? This never happened, did it? Was there a reason? Index: sys/netinet/tcp_input.c =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 --- sys/netinet/tcp_input.c (revision 225048) +++ sys/netinet/tcp_input.c (working copy) @@ -195,7 +195,7 @@ SYSCTL_VNET_INT(_net_inet_tcp, OID_AUTO, recvbuf_i &VNET_NAME(tcp_autorcvbuf_inc), 0, "Incrementor step size of automatic receive buffer"); =20 -VNET_DEFINE(int, tcp_autorcvbuf_max) =3D 256*1024; +VNET_DEFINE(int, tcp_autorcvbuf_max) =3D 2*1024*1024; #define V_tcp_autorcvbuf_max VNET(tcp_autorcvbuf_max) SYSCTL_VNET_INT(_net_inet_tcp, OID_AUTO, recvbuf_max, CTLFLAG_RW, &VNET_NAME(tcp_autorcvbuf_max), 0, Index: sys/netinet/tcp_output.c =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 --- sys/netinet/tcp_output.c (revision 225048) +++ sys/netinet/tcp_output.c (working copy) @@ -117,7 +117,7 @@ SYSCTL_VNET_INT(_net_inet_tcp, OID_AUTO, sendbuf_i &VNET_NAME(tcp_autosndbuf_inc), 0, "Incrementor step size of automatic send buffer"); =20 -VNET_DEFINE(int, tcp_autosndbuf_max) =3D 256*1024; +VNET_DEFINE(int, tcp_autosndbuf_max) =3D 2*1024*1024; #define V_tcp_autosndbuf_max VNET(tcp_autosndbuf_max) SYSCTL_VNET_INT(_net_inet_tcp, OID_AUTO, sendbuf_max, CTLFLAG_RW, &VNET_NAME(tcp_autosndbuf_max), 0, Index: sys/sys/sockbuf.h =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 --- sys/sys/sockbuf.h (revision 225048) +++ sys/sys/sockbuf.h (working copy) @@ -37,7 +37,7 @@ #include #include =20 -#define SB_MAX (256*1024) /* default for max chars = in sockbuf */ +#define SB_MAX (2*1024*1024) /* default for max chars = in sockbuf */ =20 /* * Constants for sb_flags field of struct sockbuf. --=20 Bjoern A. Zeeb You have to have visions! Stop bit received. Insert coin for new address family.