Folks I made really major changes to HttpCore NIO in order to reduce packet fragmentation on the TCP level when transmitting relatively short (less than 1 TCP frame) entity enclosing messages. In my tests I am seeing 25 to 30% performance improvements for short PUT and POST requests on the client side and for short responses the server side as a result of reduced TCP packet fragmentation.
The downside is that all this comes at the price of destabilizing areas of code that have been well tested and stable for years. I made sure that those areas have close to 100% unit test coverage, but still there can be regressions. I would be enormously thankful if you could take the latest SVN trunk for a spin and test it with your applications. I would be interesting to know if the latest changes actually translate into any tangible performance gains at the application level. Another interesting thing. For the first time I have seen NIO transports outperform blocking ones with as few as 100 concurrent connections when using the latest Java 6 or Java 7 Oracle JREs. It used to take 1000 or more concurrent connections a few years back. I am now very curious to see if I can make HttpAsyncClient outperform HttpClient with, say, 250 concurrent connections. Cheers Oleg --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
