I posted a long while ago about not being able to decrease the
response buffer below 8K.
http://marc.theaimsgroup.com/?l=tomcat-dev&m=109218414305332&w=2
See also:
Re: AJP/Java connector issues http://marc.theaimsgroup.com/?l=tomcat-
dev&m=111653712502047&w=2
I realize that I'm not familiar with all the low level reasons why
this is such a bad thing but IMO, it seems like a reasonable tradeoff
depending on the situation to increase the the number of packets
going across the network in favor of faster initial response times.
At the very least, I think it would be a good thing if it was
documented with the Tomcat Connector configuration for bufferSize
that the it cannot be decreased and preferably also why. Even better
if that documentation could just advise and leave the decision up to
the deployer. Actually the documentation for the AJP connector says
that the default bufferSize = -1(not buffered). From what I can see,
I don't think the setting has any effect on the actual buffer size.
I've applied the following patch for us, but I wasn't sure why it(or
something similar) would be bad for the Tomcat code base in general.
I did notice that Connector.getBufferSize() is deprecated, however
this would allow each of the different Connector implementations to
override with their own default bufferSize values.
-lenny
Index: catalina/src/share/org/apache/catalina/connector/Response.java
===================================================================
--- catalina/src/share/org/apache/catalina/connector/
Response.java (revision 494201)
+++ catalina/src/share/org/apache/catalina/connector/
Response.java (working copy)
@@ -129,12 +129,7 @@
*/
public void setConnector(Connector connector) {
this.connector = connector;
- if("AJP/1.3".equals(connector.getProtocol())) {
- // default size to size of one ajp-packet
- outputBuffer = new OutputBuffer(8184);
- } else {
- outputBuffer = new OutputBuffer();
- }
+ outputBuffer = new OutputBuffer(connector.getBufferSize());
outputStream = new CoyoteOutputStream(outputBuffer);
writer = new CoyoteWriter(outputBuffer);
}
Lenny Marks
Software Architect
American Physical Society
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