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authorRickard Green <[email protected]>2012-11-29 01:24:43 +0100
committerRickard Green <[email protected]>2012-12-07 00:24:27 +0100
commit9e4895da833b7777e69efc173f5dc777aaea3201 (patch)
tree02338dbdbf0b449b7b643437bf2cdd0cf73e4615 /lib/kernel/doc
parent43ebafb5fb40aee326b951d18c1880e6e5fdef6b (diff)
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Add support for busy port message queue
Diffstat (limited to 'lib/kernel/doc')
-rw-r--r--lib/kernel/doc/src/inet.xml64
1 files changed, 64 insertions, 0 deletions
diff --git a/lib/kernel/doc/src/inet.xml b/lib/kernel/doc/src/inet.xml
index bf6c4cfb1a..bfdb163e17 100644
--- a/lib/kernel/doc/src/inet.xml
+++ b/lib/kernel/doc/src/inet.xml
@@ -487,6 +487,36 @@ fe80::204:acff:fe17:bf38
example <c>Size == 2</c>, the data received will match
<c>[Byte1,Byte2|Binary]</c>.</p>
</item>
+ <tag><c>{high_msgq_watermark, Size}</c> (TCP/IP sockets)</tag>
+ <item>
+ <p>The socket message queue will be set into a busy
+ state when the amount of data queued on the message
+ queue reaches this limit. Note that this limit only
+ concerns data that have not yet reached the ERTS internal
+ socket implementation. Default value used is 8 kB.</p>
+ <p>Senders of data to the socket will be suspended if
+ either the socket message queue is busy, or the socket
+ itself is busy.</p>
+ <p>For more information see the <c>low_msgq_watermark</c>,
+ <c>high_watermark</c>, and <c>low_watermark</c> options.</p>
+ <p>Note that distribution sockets will disable the use of
+ <c>high_msgq_watermark</c> and <c>low_msgq_watermark</c>,
+ and will instead use the
+ <seealso marker="erts:erlang#system_info_dist_buf_busy_limit">distribution
+ buffer busy limit</seealso> which is a similar feature.</p>
+ </item>
+ <tag><c>{high_watermark, Size}</c> (TCP/IP sockets)</tag>
+ <item>
+ <p>The socket will be set into a busy state when the amount
+ of data queued internally by the ERTS socket implementation
+ reaches this limit. Default value used is 8 kB.</p>
+ <p>Senders of data to the socket will be suspended if
+ either the socket message queue is busy, or the socket
+ itself is busy.</p>
+ <p>For more information see the <c>low_watermark</c>,
+ <c>high_msgq_watermark</c>, and <c>low_msqg_watermark</c>
+ options.</p>
+ </item>
<tag><c>{keepalive, Boolean}</c>(TCP/IP sockets)</tag>
<item>
<p>Enables/disables periodic transmission on a connected
@@ -495,6 +525,40 @@ fe80::204:acff:fe17:bf38
considered broken and an error message will be sent to
the controlling process. Default disabled.</p>
</item>
+ <tag><c>{low_msgq_watermark, Size}</c> (TCP/IP sockets)</tag>
+ <item>
+ <p>If the socket message queue is in a busy state, the
+ socket message queue will be set in a not busy state when
+ the amount of data queued in the message queue falls
+ below this limit. Note that this limit only concerns data
+ that have not yet reached the ERTS internal socket
+ implementation. Default value used is 4 kB.</p>
+ <p>Senders that have been suspended due to either a
+ busy message queue or a busy socket, will be resumed
+ when neither the socket message queue, nor the socket
+ are busy.</p>
+ <p>For more information see the <c>high_msgq_watermark</c>,
+ <c>high_watermark</c>, and <c>low_watermark</c> options.</p>
+ <p>Note that distribution sockets will disable the use of
+ <c>high_msgq_watermark</c> and <c>low_msgq_watermark</c>,
+ and will instead use the
+ <seealso marker="erts:erlang#system_info_dist_buf_busy_limit">distribution
+ buffer busy limit</seealso> which is a similar feature.</p>
+ </item>
+ <tag><c>{low_watermark, Size}</c> (TCP/IP sockets)</tag>
+ <item>
+ <p>If the socket is in a busy state, the socket will
+ be set in a not busy state when the amount of data
+ queued internally by the ERTS socket implementation
+ falls below this limit. Default value used is 4 kB.</p>
+ <p>Senders that have been suspended due to either a
+ busy message queue or a busy socket, will be resumed
+ when neither the socket message queue, nor the socket
+ are busy.</p>
+ <p>For more information see the <c>high_watermark</c>,
+ <c>high_msgq_watermark</c>, and <c>low_msgq_watermark</c>
+ options.</p>
+ </item>
<tag><c>{nodelay, Boolean}</c>(TCP/IP sockets)</tag>
<item>
<p>If <c>Boolean == true</c>, the <c>TCP_NODELAY</c> option