From mboxrd@z Thu Jan 1 00:00:00 1970 From: Neil Horman Subject: Re: [PATCH 2/2] Update documented default values for various TCP/UDP tunables Date: Mon, 4 Jul 2011 10:58:20 -0400 Message-ID: <20110704145820.GB10310@hmsreliant.think-freely.org> References: <20110704083616.43F2C8156C57@regina.usersys.redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-sctp@vger.kernel.org, netdev@vger.kernel.org To: Max Matveev Return-path: Received: from charlotte.tuxdriver.com ([70.61.120.58]:41457 "EHLO smtp.tuxdriver.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755882Ab1GDO61 (ORCPT ); Mon, 4 Jul 2011 10:58:27 -0400 Content-Disposition: inline In-Reply-To: <20110704083616.43F2C8156C57@regina.usersys.redhat.com> Sender: netdev-owner@vger.kernel.org List-ID: On Wed, Jun 22, 2011 at 05:18:13PM +1000, Max Matveev wrote: > tcp_rmem and tcp_wmem use 1 page as default value for the minimum > amount of memory to be used, same as udp_wmem_min and udp_rmem_min. > Pages are different size on different architectures - use the right > units when describing the defaults. > > Signed-off-by: Max Matveev > --- > Documentation/networking/ip-sysctl.txt | 8 ++++---- > 1 files changed, 4 insertions(+), 4 deletions(-) > > diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt > index f37d374..387ee53 100644 > --- a/Documentation/networking/ip-sysctl.txt > +++ b/Documentation/networking/ip-sysctl.txt > @@ -394,7 +394,7 @@ tcp_rmem - vector of 3 INTEGERs: min, default, max > min: Minimal size of receive buffer used by TCP sockets. > It is guaranteed to each TCP socket, even under moderate memory > pressure. > - Default: 8K > + Default: 1 page > > default: initial size of receive buffer used by TCP sockets. > This value overrides net.core.rmem_default used by other protocols. > @@ -483,7 +483,7 @@ tcp_window_scaling - BOOLEAN > tcp_wmem - vector of 3 INTEGERs: min, default, max > min: Amount of memory reserved for send buffers for TCP sockets. > Each TCP socket has rights to use it due to fact of its birth. > - Default: 4K > + Default: 1 page > > default: initial size of send buffer used by TCP sockets. This > value overrides net.core.wmem_default used by other protocols. > @@ -553,13 +553,13 @@ udp_rmem_min - INTEGER > Minimal size of receive buffer used by UDP sockets in moderation. > Each UDP socket is able to use the size for receiving data, even if > total pages of UDP sockets exceed udp_mem pressure. The unit is byte. > - Default: 4096 > + Default: 1 page > > udp_wmem_min - INTEGER > Minimal size of send buffer used by UDP sockets in moderation. > Each UDP socket is able to use the size for sending data, even if > total pages of UDP sockets exceed udp_mem pressure. The unit is byte. > - Default: 4096 > + Default: 1 page > Acked-by: Neil Horman From mboxrd@z Thu Jan 1 00:00:00 1970 From: Neil Horman Date: Mon, 04 Jul 2011 14:58:20 +0000 Subject: Re: [PATCH 2/2] Update documented default values for various TCP/UDP Message-Id: <20110704145820.GB10310@hmsreliant.think-freely.org> List-Id: References: <20110704083616.43F2C8156C57@regina.usersys.redhat.com> In-Reply-To: <20110704083616.43F2C8156C57@regina.usersys.redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Max Matveev Cc: linux-sctp@vger.kernel.org, netdev@vger.kernel.org On Wed, Jun 22, 2011 at 05:18:13PM +1000, Max Matveev wrote: > tcp_rmem and tcp_wmem use 1 page as default value for the minimum > amount of memory to be used, same as udp_wmem_min and udp_rmem_min. > Pages are different size on different architectures - use the right > units when describing the defaults. > > Signed-off-by: Max Matveev > --- > Documentation/networking/ip-sysctl.txt | 8 ++++---- > 1 files changed, 4 insertions(+), 4 deletions(-) > > diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt > index f37d374..387ee53 100644 > --- a/Documentation/networking/ip-sysctl.txt > +++ b/Documentation/networking/ip-sysctl.txt > @@ -394,7 +394,7 @@ tcp_rmem - vector of 3 INTEGERs: min, default, max > min: Minimal size of receive buffer used by TCP sockets. > It is guaranteed to each TCP socket, even under moderate memory > pressure. > - Default: 8K > + Default: 1 page > > default: initial size of receive buffer used by TCP sockets. > This value overrides net.core.rmem_default used by other protocols. > @@ -483,7 +483,7 @@ tcp_window_scaling - BOOLEAN > tcp_wmem - vector of 3 INTEGERs: min, default, max > min: Amount of memory reserved for send buffers for TCP sockets. > Each TCP socket has rights to use it due to fact of its birth. > - Default: 4K > + Default: 1 page > > default: initial size of send buffer used by TCP sockets. This > value overrides net.core.wmem_default used by other protocols. > @@ -553,13 +553,13 @@ udp_rmem_min - INTEGER > Minimal size of receive buffer used by UDP sockets in moderation. > Each UDP socket is able to use the size for receiving data, even if > total pages of UDP sockets exceed udp_mem pressure. The unit is byte. > - Default: 4096 > + Default: 1 page > > udp_wmem_min - INTEGER > Minimal size of send buffer used by UDP sockets in moderation. > Each UDP socket is able to use the size for sending data, even if > total pages of UDP sockets exceed udp_mem pressure. The unit is byte. > - Default: 4096 > + Default: 1 page > Acked-by: Neil Horman