The message is quite large actually, since I'm sending
close to 16000 text entries in this test, and the client
is not on the same box as the server.
The results are not phenomenally different (20 seconds
for RMI/HTTP and 23 for HTTP) but it seems like the
times should be reversed for this.
Certainly there was a huge difference vs sending
individual objects instead of one RMI object with
XML (over 45 seconds in that case), but it seems like
XML without RMI should be lighter weight and therefore
faster still.
At least for this example that does not seem the case,
I'm just not sure why.
-David
-----Original Message-----
From: Ranjan Bagchi [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, May 09, 2000 11:46 AM
To: [EMAIL PROTECTED]
Cc: Ranjan Bagchi
Subject: Re: RMI/HTTP?
David,
Certainly wacky: One thing that comes to mind is: is the message short
enough that the overhead of opening a socket connection to your server could
overwhelm the transport time? In that case if RMI had some kind of
connection pooling going on it could explain.
Similarly: are client and server physically on different machines? RMI
might be being smart and further optimizing the transport.
Curious what your results are though.
Ranjan Bagchi
On Tue, 9 May 2000 11:04:44 -0700, David Regan <[EMAIL PROTECTED]>
wrote:
>This is not really the right forum for this, but I
>have been playing with Weblogic's custom RMI libraries
>in my EJB app and coming up with some very odd results.
>
>For some reason sending XML data encapsulated in a RMI
>object over HTTP is faster than sending raw XML over
>straight HTTP.
>
>This really doesn't make sense to me since using RMI
>(even an optimized version) should generate some
>additional overhead to the communication vs a raw
>URLConnection.
>
>Since I'm doing XML->DOM translations in both cases,
>that's not the issue..it really seems to be communication
>related.
>
>RMI code
> xml = obj.getDirList(name);
> parseXmlFileList(xml, 0, this);
>
>non-RMI code
> URLConnection urlc = httpServletUrl.openConnection();
> urlc.setDoOutput(true);
> urlc.setDoInput(true);
>
> PrintWriter pw = new PrintWriter(
> new OutputStreamWriter(
> urlc.getOutputStream()), true);
> pw.println(name);
>
> BufferedReader r = new BufferedReader(
> new InputStreamReader(urlc.getInputStream()));
> StringBuffer sb = new StringBuffer();
> while (true) {
> String s = r.readLine();
> if (s == null || s.equals("\n") || s.equals(""))
> break;
> sb.append(s);
> sb.append("\n");
> }
> xml = sb.toString();
> parseXmlFileList(xml, 0, this);
>
>Any opinions on this? I'm at a loss on this one.
>-David
>
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