I've been thinking about how to improve this reporting, especially now that metrics-3 (which removes all of the funky thread issues we ran into last time I tried to add it to Solr) is close to release. I think we could go about it as follows:
* refactor the existing JMX reporting to use metrics-3. This would mean replacing the SolrCore.infoRegistry map with a MetricsRegistry, and adding a JmxReporter, keeping the existing config logic to determine which JMX server to use. PluginInfoHandler and SolrMBeanInfoHandler translate the metrics-3 data back into SolrMBean format to keep the reporting backwards-compatible. This seems like a lot of work for no visible benefit, but… * we can then add the ability to define other metrics reporters in solrconfig.xml. There are already reporters for Ganglia and Graphite - you just add then to the Solr lib/ directory, configure them in solrconfig, and voila - Solr can be monitored using the same devops tools you use to monitor everything else. Does this sound sane? Alan Woodward www.flax.co.uk On 6 Apr 2013, at 20:49, Walter Underwood wrote: > Wow, that really doesn't help at all, since these seem to only be reported in > the stats page. > > I don't need another non-standard app-specific set of metrics, especially one > that needs polling. I need metrics delivered to the common system that we use > for all our servers. > > This is also why SPM is not useful for us, sorry Otis. > > Also, there is no time period on these stats. How do you graph the 95th > percentile? I know there was a lot of work on these, but they seem really > useless to me. I'm picky about metrics, working at Netflix does that to you. > > wunder > > On Apr 3, 2013, at 4:01 PM, Walter Underwood wrote: > >> In the Jira, but not in the docs. >> >> It would be nice to have VM stats like GC, too, so we can have common >> monitoring and alerting on all our services. >> >> wunder >> >> On Apr 3, 2013, at 3:31 PM, Otis Gospodnetic wrote: >> >>> It's there! :) >>> http://search-lucene.com/?q=percentile&fc_project=Solr&fc_type=issue >>> >>> Otis >>> -- >>> Solr & ElasticSearch Support >>> http://sematext.com/ >>> >>> On Wed, Apr 3, 2013 at 6:29 PM, Walter Underwood <wun...@wunderwood.org> >>> wrote: >>>> That sounds great. I'll check out the bug, I didn't see anything in the >>>> docs about this. And if I can't find it with a search engine, it probably >>>> isn't there. --wunder >>>> >>>> On Apr 3, 2013, at 6:39 AM, Shawn Heisey wrote: >>>> >>>>> On 3/29/2013 12:07 PM, Walter Underwood wrote: >>>>>> What are folks using for this? >>>>> >>>>> I don't know that this really answers your question, but Solr 4.1 and >>>>> later includes a big chunk of codahale metrics internally for request >>>>> handler statistics - see SOLR-1972. First we tried including the jar >>>>> and using the API, but that created thread leak problems, so the source >>>>> code was added. >>>>> >>>>> Thanks, >>>>> Shawn > > > >
