service workers is too high in default

[Jeffrey Zhang]

in default, the number of the workers is equal to the number of the CPU in the server.
this is too high, especially in a 50+ cpu machine. It will bring nothing bug consumer
much cpu and many rabbitmq queue.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/316876

[Steven Dake (sdake)]

Marking High since this has significant performance impact (reported in the review).

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/316876
Committed: https://git.openstack.org/cgit/openstack/kolla/commit/?id=3c3b0288b4d5a20fdab907b210539147a8103820
Submitter: Jenkins
Branch: master

commit 3c3b0288b4d5a20fdab907b210539147a8103820
Author: Jeffrey Zhang <[e-mail]>
Date: Mon May 16 21:53:16 2016 +0800

    Use a lower number of the workers

    Use a lower number of workers rather than the default value, which is
    equal to the number of the cpu. Otherwise, in a multi cpu environment,
    the number of the processes will very high.

    In this PS, we use min(5, << number of cpu >>) as the default worker
    count.

    Closes-Bug: #1582254
    Change-Id: I1c32cf0db794b43b8fb8be18f39190422ca5846f

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/kolla 3.0.0.0b3 development milestone.