From: Neil Horman <nhorman@tuxdriver.com>
To: Max Matveev <makc@redhat.com>
Cc: linux-sctp@vger.kernel.org, netdev@vger.kernel.org
Subject: Re: [PATCH 2/2] Update documented default values for various TCP/UDP tunables
Date: Mon, 4 Jul 2011 10:58:20 -0400 [thread overview]
Message-ID: <20110704145820.GB10310@hmsreliant.think-freely.org> (raw)
In-Reply-To: <20110704083616.43F2C8156C57@regina.usersys.redhat.com>
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 <makc@redhat.com>
> ---
> 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 <nhorman@tuxdriver.com>
WARNING: multiple messages have this Message-ID (diff)
From: Neil Horman <nhorman@tuxdriver.com>
To: Max Matveev <makc@redhat.com>
Cc: linux-sctp@vger.kernel.org, netdev@vger.kernel.org
Subject: Re: [PATCH 2/2] Update documented default values for various TCP/UDP
Date: Mon, 04 Jul 2011 14:58:20 +0000 [thread overview]
Message-ID: <20110704145820.GB10310@hmsreliant.think-freely.org> (raw)
In-Reply-To: <20110704083616.43F2C8156C57@regina.usersys.redhat.com>
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 <makc@redhat.com>
> ---
> 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 <nhorman@tuxdriver.com>
next prev parent reply other threads:[~2011-07-04 14:58 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-22 7:18 [PATCH 2/2] Update documented default values for various TCP/UDP tunables Max Matveev
2011-06-22 7:18 ` Max Matveev
2011-07-04 14:58 ` Neil Horman [this message]
2011-07-04 14:58 ` [PATCH 2/2] Update documented default values for various TCP/UDP Neil Horman
2011-07-05 1:36 ` [PATCH 2/2] Update documented default values for various TCP/UDP tunables Shan Wei
2011-07-05 1:36 ` [PATCH 2/2] Update documented default values for various TCP/UDP Shan Wei
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