[Bug 1378388] Re: Performance regression uploading images to glance in juno

[James Page]

I think the problem is that glance is using a tiny calculated chunk size
(from python-glance-store):

            chunk = self.conf.glance_store.rbd_store_chunk_size
            self.chunk_size = chunk * (1024 ^ 2)

this should be (from original glance rbd driver):

           1024 ** 2

Resulting in alot of tiny chucked writes instead of the default 8MB
writes.

** Also affects: python-glance-store (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: glance (Ubuntu)
     Assignee: (unassigned) => James Page (james-page)

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https://bugs.launchpad.net/bugs/1378388

Title:
  Performance regression uploading images to glance in juno

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