I've got a site that has just experienced a pretty large spike in
requests and activity above normal. The CPU on the application and
database server is well within limits and I've increased the number of
Passenger processes as well as introducing global queuing to no avail
really. Global queuing is the only way I can see if there is anything
being bottlenecked:

passenger-status
----------- General information -----------
max      = 18
count    = 18
active   = 18
inactive = 0
Waiting on global queue: 54

----------- Domains -----------
/var/www/rails/site/current:
  PID: 22283   Sessions: 1    Processed: 1       Uptime: 10m 17s
  PID: 22293   Sessions: 1    Processed: 1       Uptime: 9m 37s
  PID: 22287   Sessions: 1    Processed: 2       Uptime: 10m 8s
  PID: 22285   Sessions: 1    Processed: 2       Uptime: 10m 14s
  PID: 22291   Sessions: 1    Processed: 3       Uptime: 9m 39s
  PID: 22313   Sessions: 1    Processed: 0       Uptime: 8m 19s
  PID: 22315   Sessions: 1    Processed: 0       Uptime: 8m 18s
  PID: 22317   Sessions: 1    Processed: 0       Uptime: 8m 17s
  PID: 22319   Sessions: 1    Processed: 0       Uptime: 8m 16s
  PID: 22299   Sessions: 1    Processed: 2       Uptime: 8m 57s
  PID: 22272   Sessions: 1    Processed: 14      Uptime: 11m 6s
  PID: 22274   Sessions: 1    Processed: 8       Uptime: 10m 58s
  PID: 22309   Sessions: 1    Processed: 2       Uptime: 8m 20s
  PID: 22289   Sessions: 1    Processed: 3       Uptime: 9m 43s
  PID: 22297   Sessions: 1    Processed: 2       Uptime: 9m 30s
  PID: 22311   Sessions: 1    Processed: 1       Uptime: 8m 19s
  PID: 22281   Sessions: 1    Processed: 6       Uptime: 10m 19s
  PID: 22295   Sessions: 1    Processed: 3       Uptime: 9m 33s

The thing I'm confused about is that there are four processes there
that haven't processed anything but the global queue is 54? Am I
reading this right?

Thanks in advance,

I'm wondering whether global queuing is hindering rather than helping here but it is the only way I can see whether things are really being held up. This is what I've got now after a restart and things ahve calmed down. We've got two processes that have done the bulk of the work:

----------- General information -----------
max      = 14
count    = 14
active   = 13
inactive = 1
Waiting on global queue: 0

----------- Domains -----------
/var/www/rails/ccesd/site/current:
  PID: 22775   Sessions: 0    Processed: 1289    Uptime: 2h 38m 7s
  PID: 22777   Sessions: 1    Processed: 0       Uptime: 2h 38m 6s
  PID: 22781   Sessions: 1    Processed: 0       Uptime: 2h 37m 44s
  PID: 22787   Sessions: 1    Processed: 0       Uptime: 2h 37m 14s
  PID: 22791   Sessions: 1    Processed: 0       Uptime: 2h 37m 5s
  PID: 22793   Sessions: 1    Processed: 0       Uptime: 2h 37m 3s
  PID: 22773   Sessions: 1    Processed: 1       Uptime: 2h 38m 17s
  PID: 22785   Sessions: 1    Processed: 1       Uptime: 2h 37m 44s
  PID: 22783   Sessions: 1    Processed: 2       Uptime: 2h 37m 44s
  PID: 22755   Sessions: 1    Processed: 21      Uptime: 2h 44m 27s
  PID: 22759   Sessions: 1    Processed: 14      Uptime: 2h 40m 36s
  PID: 22757   Sessions: 1    Processed: 52      Uptime: 2h 43m 28s
  PID: 22975   Sessions: 1    Processed: 0       Uptime: 1h 10m 25s
  PID: 22779   Sessions: 1    Processed: 1299    Uptime: 2h 37m 55s

Would increasing pool size really help, which is what I've read when global queue is not showing zero?

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