Hi I know, reasking the same question if there was no answer, is no good style. However I had problems using apache-lists earlier and I don't know wether my mail made it to the list. So could anyone please respond, that the mail itself made it? (Solutions to my problem are welcome as well :D )
Sorry and regard, Steffen > -----Original Message----- > From: Steffen Heil [mailto:[EMAIL PROTECTED] > Sent: Saturday, September 23, 2006 3:27 AM > To: 'Tomcat Users List' > Subject: Tomcat 5.5.17 has max 40 KB / sec > > Hi > > I use tomcat 5.5.17 and want to upload files. As this was > *very* slow in some cases, I wrote a benchmark servlet. Code is below. > I get the following statistics: > > 1. Running server on debian linux it accepts about 8.5 MB / > sec. (Could slowed down by VM overhead.) 2. Running server on > windows xp it accepts about 3.5 MB / sec when the client is > connected over an rinetd redirection. > 3. Running server on windows xp it accepts ONLY 40 KB / sec > when the clinet is connected directly. > > This problem applies to Internet Explorer 6.0 as client only. > It does not occur so with Firebird (but still only about 2.4 > MB / sec). > > Using wireshark I found that the Internet Explorer is sending > only 8 KB > (exactly) followed by an tcp PSH, which is not answered by > the windows xp machine running tomcat for 0.2 sec. That gives > me exactly the 40 KB/sec. > > I would say, my xp tcp stack is damaged, but it works with > the same server, when redirected through an external rinetd. > > What can I do ? > Where can I start debugging ? > Anyone having similar problems ? > > If possible, please also reply to me directly (CC). > > Regards, > Steffen > > > > -->8---------------------------------------------------------- > ---------- > -->--- > > package mypackage; > > import java.io.InputStream; > > import javax.servlet.ServletException; > import javax.servlet.http.HttpServlet; > import javax.servlet.http.HttpServletRequest; > import javax.servlet.http.HttpServletResponse; > > > public class UpstreamBenchmark extends HttpServlet implements > Runnable { > > private long start = -1; > > private int total; > > private Thread thread; > > private final byte[] buffer = new byte[ 4096 ]; > > > public void run() > { > while ( !Thread.interrupted() ) { > if ( start != -1 ) { > long time = > System.currentTimeMillis() - start + 1; > double speed = ( total / 1.024 ) / time; > System.out.println( "speed: " + > speed + " > kb/sec" ); > } > try { > Thread.sleep( 500 ); > } catch ( Throwable t ) { > t.printStackTrace(); > } > } > } > > > @Override > public void destroy() > { > thread.interrupt(); > super.destroy(); > } > > > @Override > public void init() > throws ServletException > { > super.init(); > thread = new Thread( this ); > thread.start(); > } > > > @Override > protected final void doPost( HttpServletRequest > request, HttpServletResponse response ) > { > try { > total = 0; > start = System.currentTimeMillis(); > InputStream is = request.getInputStream(); > int read; > while ( ( read = is.read( buffer ) ) != -1 ) > total += read; > is.close(); > System.out.println( "read " + total + " > bytes." ); > } catch ( Throwable t ) { > t.printStackTrace(); > } > start = -1; > } > > } >
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