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https://issues.apache.org/jira/browse/KAFKA-200?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13168661#comment-13168661
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John Fung commented on KAFKA-200:
---------------------------------
Hi Jay,
The followings are the debug messages from the throughput test and the set
values are effective:
1. Kafka log messages at the sending side:
. . .
[2011-12-13 01:54:57,572] INFO Closing socket connection to /172.17.166.122.
(kafka.network.Processor)
[2011-12-13 01:54:59,390] INFO #### sendBufferSize : set[1048576] get[1048576]
(kafka.network.Acceptor)
[2011-12-13 01:54:59,390] INFO #### sendBufferSize : set[1048576] get[1048576]
(kafka.network.Acceptor)
[2011-12-13 01:54:59,391] INFO #### sendBufferSize : set[1048576] get[1048576]
(kafka.network.Acceptor)
. . .
The code which prints the messages is from
core/src/main/scala/kafka/network/SocketServer.scala:
def accept(key: SelectionKey, processor: Processor) {
val socketChannel = key.channel().asInstanceOf[ServerSocketChannel].accept()
if(logger.isDebugEnabled)
logger.info("Accepted connection from " +
socketChannel.socket.getInetAddress() + " on " +
socketChannel.socket.getLocalSocketAddress)
socketChannel.configureBlocking(false)
socketChannel.socket().setTcpNoDelay(true)
socketChannel.socket().setSendBufferSize(sendBufferSize)
socketChannel.socket().setReceiveBufferSize(receiveBufferSize)
logger.info("#### sendBufferSize : set[" + sendBufferSize + "] get[" +
socketChannel.socket().getSendBufferSize() + "]")
2. ConsoleConsumer has some debug messages printing from SimpleConsumer at the
receiving side:
. . .
[2011-12-13 01:58:15,099] DEBUG Connected to /172.17.166.122:10251 for
fetching. (kafka.consumer.SimpleConsumer)
[2011-12-13 01:58:15,160] TRACE requested receive buffer size=512000 actual
receive buffer size= 512000 (kafka.consumer.SimpleConsumer)
. . .
> Support configurable send / receive socket buffer size in server
> ----------------------------------------------------------------
>
> Key: KAFKA-200
> URL: https://issues.apache.org/jira/browse/KAFKA-200
> Project: Kafka
> Issue Type: Improvement
> Components: core
> Affects Versions: 0.7
> Reporter: John Fung
> Fix For: 0.8
>
> Attachments: KAFKA-200.patch
>
>
> * Make the send / receive socket buffer size configurable in server.
> * KafkaConfig.scala already has the following existing variables to support
> send / receive buffer:
> socketSendBuffer
> socketReceiveBuffer
> * The patch attached to this ticket will read the following existing settings
> in <kafka>/config/server.properties and set the corresponding socket buffers
> . . .
> # The send buffer (SO_SNDBUF) used by the socket server
> socket.send.buffer=1048576
> # The receive buffer (SO_RCVBUF) used by the socket server
> socket.receive.buffer=1048576
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