Re: [wildfly-dev] Configuration of statistics gathering
On Wed, 2013-11-06 at 10:26 -0600, Brian Stansberry wrote:
I'd like to get some info from the component leads responsible
for WF
subsystems.
1) What statistical data does your subsystem capture (including the
underlying libraries it integrates).
Infinispan collects a bazillion statistics [1] per cache and cache
container instance.
In JGroups, statistics are collected by each protocol in the protocol
stack. I don't have a complete list, but, for example, the transport
protocols collect the following:
num_msgs_received
num_bytes_received
num_msgs_sent
num_bytes_sent
2) What configuration options do you support for enabling/disabling
statistics gathering. What's the resource address and attribute name of
the config option?
For Infinispan, [2] adds an option to enable/disable statistics per
cache and per cache-container.
e.g.
/subsystem=infinispan/cache-container=foo:read-attribute(name=statistics)
/subsystem=infinispan/cache-container=foo/local-cache=bar:read-attribute(name=statistics)
/subsystem=infinispan/cache-container=foo/invalidation-cache=bar:read-attribute(name=statistics)
/subsystem=infinispan/cache-container=foo/distributed-cache=bar:read-attribute(name=statistics)
/subsystem=infinispan/cache-container=foo/replicated-cache=bar:read-attribute(name=statistics)
For JGroups, a mechanism to disable statistics gathering is exposed, but
it's a bit cumbersome. [3] seeks to fix this.
e.g.
/subsystem=jgroups/stack=udp/transport=TRANSPORT/property=stats:add(value=true)
/subsystem=jgroups/stack=udp/protocol=FOO/property=stats:add(value=true)
3) Is the statistic gathering enabled by default?
Infinispan, currently yes, but [2] will disable statistics by default.
JGroups, yes.
Paul Ferraro's pull request [1] fixing JIRA [2] prompts this
question,
although it's long overdue. WF should be consistent about how we handle
configuration of statistics gathering, so I'd like to take the
opportunity of Paul's PR to move in that direction.
Thanks for your help.
[1] http://docs.jboss.org/infinispan/6.0/apidocs/jmxComponents.html
[2] https://github.com/wildfly/wildfly/pull/5415
[2] https://issues.jboss.org/browse/WFLY-2453