From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Heffner Subject: [PATCH 2/3] TCP sysctl documentation: tcp_no_metrics_save Date: Mon, 26 Feb 2007 20:09:34 -0500 Message-ID: <45E384CE.7030209@psc.edu> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="------------020500050800060005030809" To: David Miller , netdev Return-path: Received: from mailer1.psc.edu ([128.182.58.100]:54928 "EHLO mailer1.psc.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1161041AbXB0BJl (ORCPT ); Mon, 26 Feb 2007 20:09:41 -0500 Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org This is a multi-part message in MIME format. --------------020500050800060005030809 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit --------------020500050800060005030809 Content-Type: text/plain; x-mac-type="0"; x-mac-creator="0"; name="doc2.patch" Content-Transfer-Encoding: 7bit Content-Disposition: inline; filename="doc2.patch" Document sysctl tcp_no_metrics_save. Signed-off-by: John Heffner --- commit 17cb799000caef3b2fed28cc5d0601bb2311efa8 tree c27ccf561065b145bc48d0b8dbbaa3c608015e03 parent 4c5fd9d3a9ea8b939aed1afda2ac0fc54e3df592 author John Heffner Mon, 26 Feb 2007 19:51:50 -0500 committer John Heffner Mon, 26 Feb 2007 19:51:50 -0500 Documentation/networking/ip-sysctl.txt | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt index a9ad96b..891f389 100644 --- a/Documentation/networking/ip-sysctl.txt +++ b/Documentation/networking/ip-sysctl.txt @@ -249,6 +249,14 @@ tcp_moderate_rcvbuf - BOOLEAN match the size required by the path for full throughput. Enabled by default. +tcp_no_metrics_save - BOOLEAN + By default, TCP saves various connection metrics in the route cache + when the connection closes, so that connections established in the + near future can use these to set initial conditions. Usually, this + increases overall performance, but may sometimes cause performance + degredation. If set, TCP will not cache metrics on closing + connections. + tcp_orphan_retries - INTEGER How may times to retry before killing TCP connection, closed by our side. Default value 7 corresponds to ~50sec-16min --------------020500050800060005030809--