Thanks Dave for posting your findings. I'm sure our users would appreciate it.
Thanks, Keith. On Thu, Apr 23, 2009 at 7:42 AM, David Rees <dree...@gmail.com> wrote: > On Wed, Apr 22, 2009 at 6:30 PM, David Rees <dree...@gmail.com> wrote: > > OK, more reading and now I realize that keep-alive should be on by > > default, but to get any performance benefit, I also need to > > REUSE_HTTP_CLIENT. So I've done that and yes, performance has > > improved now, but I run into the default limit of only 2 concurrent > > connections per host limit. > > > > How can I set my own MULTITHREAD_HTTP_CONNECTION_MANAGER or raise the > > default limit? This is a custom application so I am not worried about > > exceeding RFC specifications for concurrent connections. > > Talking to myself a bit more, but I finally figured out how to do it > with the help of this thread[1] on the axis-dev list. The key is to > set both REUSE_HTTP_CLIENT to true and CACHED_HTTP_CLIENT to my own > HttpClient class. > > Here's what I am doing is pseudo code: > > Wrap the creation of new stubs in a function which then calls these > functions: > > Options o = stub._getServiceClient().getOptions(); > o.setProperty(HTTPConstants.CHUNKED, Boolean.FALSE); > o.setProperty(HTTPConstants.MC_ACCEPT_GZIP, Boolean.TRUE); > o.setProperty(HTTPConstants.REUSE_HTTP_CLIENT, Boolean.TRUE); > o.setProperty(HTTPConstants.CACHED_HTTP_CLIENT, getHttpClient()); > > getHttpClient creates a cached HttpClient with my own > MultiThreadedHttpConnectionManager: > > MultiThreadedHttpConnectionManager manager = new > MultiThreadedHttpConnectionManager(); > manager.getParams().setDefaultMaxConnectionsPerHost(20); > httpClient = new HttpClient(manager); > httpClient.getParams().setVersion(HttpVersion.HTTP_1_1); > > So far this appears to work well and significantly reduces response > time and improves performance when making a lot of requests in a row. > > Would be nice if this were documented somewhere official, but at least > now it will be in the mail archives. :-) > > -Dave > > [1] http://markmail.org/message/e4wdlwgnkkttqiov > -- Keith Chapman Senior Software Engineer WSO2 Inc. Oxygenating the Web Service Platform. http://wso2.org/ blog: http://www.keith-chapman.org
