Comment 33 for bug 1393505

Reviewed: https://review.fuel-infra.org/5253
Committed: https://review.fuel-infra.org/gitweb?p=openstack/ceilometer.git;a=commitdiff;h=72dda6dba9bc18b34746de91e17ba78d87ad2aa7
Submitter: Vitaly Sedelnik
Branch: openstack-ci/fuel-6.0-updates/2014.2

commit 72dda6dba9bc18b34746de91e17ba78d87ad2aa7
Author: Alex Ermolov <email address hidden>

Change messaging listener executor to blocking

Now we use 'eventlet' notification_listener executor. it's
provide socket errors with rabbitmq. Blocking executor avoid
these issues.
Notification service performance does not change much for these
cases. In HA mode with 3 controllers "eventlet" 3
ceilometer-agent-notification processed ~150 samples per second,
"blocking" ~120 samples/sec.

Closes-bug: #1393505
Change-Id: I7f2bf518453b4f3706fca92ac0b09c70f041ed9c