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Commit 6539fefd authored by Max Matveev's avatar Max Matveev Committed by David S. Miller
Browse files

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: default avatarShan Wei <shanwei@cn.fujitsu.com>
Acked-by: default avatarNeil Horman <nhorman@tuxdriver.com>
Signed-off-by: default avatarMax Matveev <makc@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent a6e1204b

Documentation/networking/ip-sysctl.txt

+4 −4
Original line number Diff line number Diff line
@@ -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: