* [PATCH 2/2] configurator: attempt to clarify :tcp_nopush/:tcp_nodelay
@ 2011-04-27 21:12 7% ` Eric Wong
0 siblings, 0 replies; 1+ results
From: Eric Wong @ 2011-04-27 21:12 UTC (permalink / raw)
To: mongrel-unicorn; +Cc: Aaron Patterson
These options will probably be more important as interest in
streaming responses in Rails 3.1 develops.
I consider the respective defaults for Unicorn (designed to run
behind nginx) and Rainbows! (designed to run standalone) to be
the best choices in their respective environments.
---
lib/unicorn/configurator.rb | 22 +++++++++++++++-------
1 files changed, 15 insertions(+), 7 deletions(-)
diff --git a/lib/unicorn/configurator.rb b/lib/unicorn/configurator.rb
index 73869de..bed3abe 100644
--- a/lib/unicorn/configurator.rb
+++ b/lib/unicorn/configurator.rb
@@ -253,24 +253,32 @@ class Unicorn::Configurator
#
# [:tcp_nodelay => true or false]
#
- # Disables Nagle's algorithm on TCP sockets if +true+
+ # Disables Nagle's algorithm on TCP sockets if +true+.
+ #
+ # Setting this to +true+ can make streaming responses in Rails 3.1
+ # appear more quickly at the cost of slightly higher bandwidth usage.
+ # The effect of this option is most visible if nginx is not used,
+ # but nginx remains highly recommended with \Unicorn.
#
# This has no effect on UNIX sockets.
#
- # Default: operating system defaults (usually Nagle's algorithm enabled)
+ # Default: +false+ (Nagle's algorithm enabled) in \Unicorn,
+ # +true+ in Rainbows!
#
# [:tcp_nopush => true or false]
#
# Enables/disables TCP_CORK in Linux or TCP_NOPUSH in FreeBSD
#
- # This is enabled by default as of Unicorn 3.4. This prevents partial
- # TCP frames from being sent out and reduces wakeups in nginx if it is
- # on a different machine. Since Unicorn is only designed for applications
- # that send the response body quickly without keepalive, sockets will
- # always be flushed on close to prevent delays.
+ # This prevents partial TCP frames from being sent out and reduces
+ # wakeups in nginx if it is on a different machine. Since \Unicorn
+ # is only designed for applications that send the response body
+ # quickly without keepalive, sockets will always be flushed on close
+ # to prevent delays.
#
# This has no effect on UNIX sockets.
#
+ # Default: +true+ in \Unicorn 3.4+, +false+ in Rainbows!
+ #
# [:tries => Integer]
#
# Times to retry binding a socket if it is already in use
--
Eric Wong
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2011-04-27 18:13 Rails streaming example video Eric Wong
2011-04-27 21:12 ` [PATCH 0/2] attempting to clarify docs for streaming Eric Wong
2011-04-27 21:12 7% ` [PATCH 2/2] configurator: attempt to clarify :tcp_nopush/:tcp_nodelay Eric Wong
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