André Carvalho c43dfaba1c Add max concurrent and current queries engine metrics (#2326)
* Add max concurrent and current queries engine metrics

This commit adds two metrics to the promql/engine: the
number of max concurrent queries, as configured by the flag, and
the number of current queries being served+blocked in the engine.
2017-01-07 14:41:25 +00:00
..
2016-04-29 22:50:24 +02:00
2016-11-21 14:42:45 +00:00
2015-08-26 12:44:46 +02:00
2016-07-21 00:09:19 +01:00