Open Stack

Hi, I'd like you to take a look at this patch for potential
DocImpact.
https://review.openstack.org/22792

Log:
commit 1d8a02f25c8e439e7ce1c45638e9401ea2e8be26
Author: Jian Zhang <jian.zhang at intel.com>
Date:   Sun Feb 24 00:02:32 2013 -0800

    Added per disk PUT timing monitoring support.
    
    Fixes bug 1104708
    
    There could be severe performance drop for swift is one disk of one
    storage node is problematic due to the tragic state of async disk I/O.
    
    This patch provided PUT timing per kB transfered (ms/kB) monitoring
    support for each non-zero-byte request of each disk and report to
    statsD for alert.
    -adding "object-server.PUT.<device>.timing" metrics for object-server.
    
    DocImpact.
    
    Change-Id: Ie94bddad28e8be52e71683bf6c9db988664abe47