Comment 2 for bug 1784753

Reviewed: https://review.openstack.org/614018
Committed: https://git.openstack.org/cgit/openstack/swift/commit/?id=06cf5d298fb6b103899aa358e1cb4b828f502dc5
Submitter: Zuul
Branch: master

commit 06cf5d298fb6b103899aa358e1cb4b828f502dc5
Author: Clay Gerrard <email address hidden>
Date: Mon Oct 29 14:49:48 2018 -0500

    Add databases_per_second to db daemons

    Most daemons have a "go as fast as you can then sleep for 30 seconds"
    strategy towards resource utilization; the object-updater and
    object-auditor however have some "X_per_second" options that allow
    operators much better control over how they spend their I/O budget.

    This change extends that pattern into the account-replicator,
    container-replicator, and container-sharder which have been known to peg
    CPUs when they're not IO limited.

    Partial-Bug: #1784753
    Change-Id: Ib7f2497794fa2f384a1a6ab500b657c624426384