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TCP: Difference between revisions
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* http://articles.techrepublic.com.com/5100-10878_11-1050878.html -- "TCP/IP options for high-performance data transmission" | i;i'* http://articles.techrepublic.com.com/5100-10878_11-1050878.html -- "TCP/IP options for high-performance data transmission" | ||
* http://www.ussg.iu.edu/hypermail/linux/kernel/0102.0/0943.html -- [[LKML]] thread, "TCP_NOPUSH on FreeBSD, TCP_CORK on Linux" | * http://www.ussg.iu.edu/hypermail/linux/kernel/0102.0/0943.html -- [[LKML]] thread, "TCP_NOPUSH on FreeBSD, TCP_CORK on Linux" | ||
* http://www.irbs.net/internet/postfix/0707/1097.html -- postfix thread, "dkim-milter signing terribly slow with Postfix, but not with sendmail" | * http://www.irbs.net/internet/postfix/0707/1097.html -- postfix thread, "dkim-milter signing terribly slow with Postfix, but not with sendmail" | ||
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* [[Linux APIs#IPPROTO_TCP|Linux's]] TCP socket options | * [[Linux APIs#IPPROTO_TCP|Linux's]] TCP socket options | ||
* [[FreeBSD APIs#IPPROTO_TCP|FreeBSD's]] TCP socket options | * [[FreeBSD APIs#IPPROTO_TCP|FreeBSD's]] TCP socket options | ||
* [http://linuxgazette.net/135/pfeiffer.html TCP and Linux' Pluggable Congestion Control Algorithms], a 2007 Linux Gazette article by René Pfeiffer | |||
Revision as of 02:28, 2 May 2010
i;i'* http://articles.techrepublic.com.com/5100-10878_11-1050878.html -- "TCP/IP options for high-performance data transmission"
- http://www.ussg.iu.edu/hypermail/linux/kernel/0102.0/0943.html -- LKML thread, "TCP_NOPUSH on FreeBSD, TCP_CORK on Linux"
- http://www.irbs.net/internet/postfix/0707/1097.html -- postfix thread, "dkim-milter signing terribly slow with Postfix, but not with sendmail"
- This becomes: "TCP_NODELAY, TCP_CORK, TCP_NOPUSH, etc (was: dkim-milter signing terribly slow...)"
Portable APIs
- TCP_NODELAY: Disable Nagle's algorithm (coalescing of small packets until an ACK is received or a retransmission triggered). See the Linux APIs page for interactions with TCP_CORK on that platform.
Tuning
TCP auto-tuning on Linux
- netdev 2009-03-11, "TCP rx window autotuning harmful at LAN context"
- The Pittsburgh Supercomputing Center's Linux TCP notes
TCP auto-tuning on FreeBSD
- Finally introduced in [FreeBSD 7.2] by Andre Oppermann:
With TCP send buffer auto scaling and the default values below it supports 20Mbit/s at 100ms and 10Mbit/s at 200ms. Both read and write buffer are auto-sized.
See also
- Linux's TCP socket options
- FreeBSD's TCP socket options
- TCP and Linux' Pluggable Congestion Control Algorithms, a 2007 Linux Gazette article by René Pfeiffer
