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I am trying to track down a strange networking problem.

Basically, a http download from a tomcat server is slowing down over time. For example, the download speed starts at 700kb, then slows to 650, 600, 550, 500, etc.

I have heard TCP/IP windowing might cause this problem. To make this problem a little stranger sFTP does not see the speed decrease.

I am confident it is not a problem with the webapp. It is running from tomcat and a Linux red hat machine.

Go easy on me, I am not a network guy.

GC_

GC_
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  • You'll need to provide more information about your network and what http client you are using. If you are using Tomcat to serve static files, that's not ideal from a performance standpoint (NGINX or Apache are better suited for this). If Tomcat is applying gzip compression or the app is generating the data being downloaded this could explain the behavior. – Jeff Jan 14 '16 at 23:21
  • @Jeffrey This is just a basic servlet, that spits out lines. I not really complaining about the speed. I am complaining that the speed slows down. There is no compression. – GC_ Jan 15 '16 at 14:13
  • What is the output of curl --head http://url.com/path-to-servlet (this assumes a *nix environment). You could also copy the headers out of Chrome using developer tools if you're on Windows. – Jeff Jan 15 '16 at 15:32
  • @Jeffrey What am I looking for? (I don't think I will be able to publish this type of information.) – GC_ Jan 26 '16 at 22:53

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