How to know the number of queries pending for execution in Solr Server

[roz dev <ro...@gmail.com>]

Hi All

I am trying to do some performance analysis of Solr in our setup. I can see
that we have stats like response time and queries per second.

Is there a way to know the number of queries which are pending for
execution while solr is serving request?
Also, does solr provide any stats like number of concurrent queries that
are being served?

Any inputs are welcome.

-Saroj