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On Fri, 23 Jun 2006, Ard Schrijvers wrote:
Date: Fri, 23 Jun 2006 16:53:17 +0200
From: Ard Schrijvers <[EMAIL PROTECTED]>
Reply-To: dev@cocoon.apache.org
To: dev@cocoon.apache.org
Subject: RE: StatusGenerator.java extended
Ard Schrijvers escribió:
We are using many continuations in our projects, implying
have load on memory use (apparantly continuations can be very
large in memory..?).
Since in a deployed environment we want to have some idea
about the number of continuations out there, I have added
this to the StatusGenerator, in the same manner as for the
StoreJanitor is done.
Also added to the "Memory" group is the max memory
available (Runtime.getRuntime().maxMemory())
Can I send in a patch to have it standard in the StatusGenerator?
hi Ard,
It is a nice enhancement. I will like to see it in cocoon. ;-)
Shall I send in a patch before trying to add status of any
database connection pools, or first try to add this one as well?
Wouldn't a JMX bean be of much more value?
Yes it would be very nice to have, but does it not imply that all
interfaces should be adjusted to what they expose?
Well, normally you will have different interfaces for a MBeans
(management) than for your components (system design/architecture)
because the MBean interface reflects the manageability of a
implementation whereas the component interface reflects a design aspect
of a system part. As an example take the Store interface. For a
DiskStore you'd probably have different manageability requirements than
for a MemoryStore. But both implement the same design interface which
has method you really don't want to see on a JMX-Console (i.e.
store(key,value)) because they don't make much sense there.
There are tools to automatically create MBeans out of components but
those I personally never had good results with them because of the
reasons I explained above.
Is it not a little out of scope at the moment?
What scope are you referring to?
And does it not require java 1.5..?
No, JMX is available back to Java 1.3 IIRC (i.e. MX4J).
For 2.1.X I remember having made JMX support available but could find it
anymore (just the jetty config in tools/jetty/conf/main-jmx.xml). Has it
been removed?
For 2.2 with Spring you almost get JMX for free.
- --
Giacomo Pati
Otego AG, Switzerland - http://www.otego.com
Orixo, the XML business alliance - http://www.orixo.com
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