I have a process that periodically polls gmetad (builds models of some
metrics, alerts if things don't look like).  To reduce the number of
variables I set up a dedicated gmetad on the same host as the poller and
set "write_rrds off".  Unless I'm missing something the only thing it
should be doing is polling gmond, and responding to my polls.

Polling localhost currently has a mean around 2000 ms, with a stddev
around 30.  I've seen higher outliers, but right now I'm just trying to
figure out of that's normal.  2000 ms to send a request over the
loopback interface *seems* like a lot.   But I don't really have
anything to compare it to.  Is that normal?


Info:
 - ganglia 3.4.0
 - centos5 [1]
 - xml size: 25 MiB
 - hosts: > 300
 - metrics: > 9k
 - unique host-metric pairs: > 80k

[1] Same setup in another DC with centos6, so I don't think it's that.

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