JSP Performance Question

[sbutler]

I have a JSP page that takes in fileName and filePath parameters, and downloads the file to the user. The code executes fine, but the server's CPU is maxed out during the time the file is downloading. When copying a 5 MB file at about 300KB/sec, it takes around 15 seconds, and I really don't like having the server maxed for that long....and that is just 1 user. It just seems as if streaming a file really shouldn't take that much CPU. Also, the machine is only a 1.25 Ghz G4 Mac Mini (for now).
I have copied the code below.

Code: Select all

<%@ page import = "java.util.*" %>
<%@ page import = "java.io.*" %>
<%@ page import = "com.servoy.j2db.server.headlessclient.*" %>
<%@ page import = "com.servoy.j2db.dataprocessing.IDataSet" %>
<%@ page errorPage="errorpage.jsp" %>
<%
   ISessionBean servoy_hc = (ISessionBean)session.getAttribute("servoy");
   if (servoy_hc == null)
   {
      servoy_hc = HeadlessClientFactory.createSessionBean(request,"jsp_docmgt");
      session.setAttribute("servoy",servoy_hc);
   }
   boolean ok = servoy_hc.setMainForm("jsp_docmgt_main");
   if (!ok)
   {
      out.print("error cannot work on required form");
      return;
   }
   
    String filename = request.getParameter("fileName");
   String filepath = request.getParameter("filePath");

   response.setContentType("application/octet-stream"); 
   response.setHeader("Content-Disposition","attachment; filename=\"" + filename + "\"");

   java.io.FileInputStream fileInputStream = new java.io.FileInputStream(filepath + filename);
 
   int i;
   while ((i=fileInputStream.read()) != -1) {
      out.write(i);
   }
   fileInputStream.close();
   out.close();
%>