doc: Change the min default value of tcp_wmem/tcp_rmem.

Message ID 1517796430-4335-1-git-send-email-xiangxia.m.yue@gmail.com
State Accepted
Delegated to: David Miller
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  • doc: Change the min default value of tcp_wmem/tcp_rmem.
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Commit Message

Tonghao Zhang Feb. 5, 2018, 2:07 a.m.
The SK_MEM_QUANTUM was changed from PAGE_SIZE to 4096. And the
tcp_wmem/tcp_rmem min default values are 4096.

Fixes: bd68a2a854ad ("net: set SK_MEM_QUANTUM to 4096")
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
---
 Documentation/networking/ip-sysctl.txt | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

David Miller Feb. 5, 2018, 3:06 p.m. | #1
From: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Date: Sun,  4 Feb 2018 18:07:10 -0800

> The SK_MEM_QUANTUM was changed from PAGE_SIZE to 4096. And the
> tcp_wmem/tcp_rmem min default values are 4096.
> 
> Fixes: bd68a2a854ad ("net: set SK_MEM_QUANTUM to 4096")
> Cc: Eric Dumazet <edumazet@google.com>
> Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>

Applied, thanks.

Patch

diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index 3f2c40d..a553d4e 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -508,7 +508,7 @@  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: 1 page
+	Default: 4K
 
 	default: initial size of receive buffer used by TCP sockets.
 	This value overrides net.core.rmem_default used by other protocols.
@@ -667,7 +667,7 @@  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: 1 page
+	Default: 4K
 
 	default: initial size of send buffer used by TCP sockets.  This
 	value overrides net.core.wmem_default used by other protocols.