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| author | Max Matveev <makc@redhat.com> | 2011-06-21 21:18:13 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-07-04 19:14:09 -0700 |
| commit | 6539fefd9bec5faf948b03aec9f9078691d0be6b (patch) | |
| tree | 0c3f9edbce15ae4b03a975b73e867ac9f0be8cdc /Documentation/networking | |
| parent | a6e1204b82d3e8d7ba1baca35bdb595c722105eb (diff) | |
| download | lwn-6539fefd9bec5faf948b03aec9f9078691d0be6b.tar.gz lwn-6539fefd9bec5faf948b03aec9f9078691d0be6b.zip | |
Update documented default values for various TCP/UDP tunables
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.
Reviewed-by: Shan Wei <shanwei@cn.fujitsu.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Max Matveev <makc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/networking')
| -rw-r--r-- | 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 1a6de5b52273..e3df1191e717 100644 --- a/Documentation/networking/ip-sysctl.txt +++ b/Documentation/networking/ip-sysctl.txt @@ -384,7 +384,7 @@ 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. @@ -473,7 +473,7 @@ 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. @@ -543,13 +543,13 @@ 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 CIPSOv4 Variables: |