openstack
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openstack
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Update git submodules 

* Update swift from branch 'master'
  - Merge "Replace all "with Chunk*Timeout" by a watchdog"
  - Replace all "with Chunk*Timeout" by a watchdog
    
    The contextmanager eventlet.timeout.Timeout is scheduling a call to
    throw an exception every time is is entered. The swift-proxy uses
    Chunk(Read|Write)Timeout for every chunk read/written from the client or
    object-server. For a single upload/download of a big object, it means
    tens of thousands of scheduling in eventlet, which is very costly.
    
    This patch replace the usage of these context managers by a watchdog
    greenthread that will schedule itself by sleeping until the next timeout
    expiration. Then, only if a timeout expired, it will schedule a call to
    throw the appropriate exception.
    
    The gain on bandwidth and CPU usage is significant. On a benchmark
    environment, it gave this result for an upload of 6 Gbpson a replica
    policy (average of 3 runs):
        master: 5.66 Gbps / 849 jiffies consumed by the proxy-server
        this patch: 7.56 Gbps / 618 jiffies consumed by the proxy-server
    
    Change-Id: I19fd42908be5a6ac5905ba193967cd860cb27a0b
This commit is contained in:
Zuul 2020-04-04 07:53:26 +00:00 committed by Gerrit Code Review
parent ee4f64049d
commit 169ac17dd2
1 changed files with 1 additions and 1 deletions
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swift

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Subproject commit f3c04afed3e61758c41e7c5ea6dd52de427635ea
Subproject commit 7158adfb221d8d7b0b7b72d1e4eceddab0aff726