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From Stephen <liwp_step...@126.com>
Subject HttpClient Performance issue
Date Mon, 23 May 2011 10:34:40 GMT
I use HttpClient to upload data to the Windows Azure, it use four threads to work together,
but the performance is slow.


I use the ThreadSafeClientConnManager to manage the connection.
static {
SchemeRegistry schemeRegistry = new SchemeRegistry();
schemeRegistry.register(new Scheme("http", 80, PlainSocketFactory.getSocketFactory()));
schemeRegistry.register(new Scheme("https", 443, SSLSocketFactory.getSocketFactory()));


cm = new ThreadSafeClientConnManager(schemeRegistry);
cm.setMaxTotal(100);
cm.setDefaultMaxPerRoute(10);
}


and the HttpClient parameters set like following:
DefaultHttpClient httpClient = new DefaultHttpClient(cm);
httpClient.getParams().setParameter(CoreConnectionPNames.STALE_CONNECTION_CHECK, true);
httpClient.getParams().setParameter(CoreConnectionPNames.TCP_NODELAY, true);
httpClient.getParams().setParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, 50*1000);


When I add the log, it seems the time was cost at http.execute method.
name:E:\Softwares\com.google.gdt.eclipse.suite.3.6.update.site_2.3.0.zip.136 length:1,048,576
type1 time:1,400
name:E:\Softwares\com.google.gdt.eclipse.suite.3.6.update.site_2.3.0.zip.137 length:1,048,576
type1 time:2,207
name:E:\Softwares\com.google.gdt.eclipse.suite.3.6.update.site_2.3.0.zip.139 length:1,048,576
type1 time:2,501
name:E:\Softwares\com.google.gdt.eclipse.suite.3.6.update.site_2.3.0.zip.138 length:1,048,576
type1 time:2,633




name:E:\Softwares\com.google.gdt.eclipse.suite.3.6.update.site_2.3.0.zip.148 length:1,048,576
type1 time:1,899
name:E:\Softwares\com.google.gdt.eclipse.suite.3.6.update.site_2.3.0.zip.149 length:1,048,576
type1 time:2,157
name:E:\Softwares\com.google.gdt.eclipse.suite.3.6.update.site_2.3.0.zip.151 length:1,048,576
type1 time:2,461
name:E:\Softwares\com.google.gdt.eclipse.suite.3.6.update.site_2.3.0.zip.150 length:1,048,576
type1 time:2,672


It seems the first thread finished first, then the other thread work again. but in the log,
httpClient.execute method is called almost the same time.


I don't know what's the problem, is there any parameter I didn't set probably?


Thanks for any help.
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