yahoo-eng-team team mailing list archive

[Tom Hancock <1279832@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

$nova image-list can often run very slowly (or any image listing done from nova) due to the fact that
when it calls into glanceclient it typically doesn't specify a page_size and so glanceclient uses its default of 20.
For larger lists of images (eg. if there were lots of snapshots, or if there were a lot of public images) this
results in a succession of queries from nova to the glance api server (and on to the database via registry)
for a small amount of images at a time, when a single request could often return many more or all images.
For 1000 images the hit is 50X, and so forth.

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1279832

Title:
  nova image-list can run slowly.

Status in OpenStack Compute (Nova):
  New

Bug description:
  $nova image-list can often run very slowly (or any image listing done from nova) due to the fact that
  when it calls into glanceclient it typically doesn't specify a page_size and so glanceclient uses its default of 20.
  For larger lists of images (eg. if there were lots of snapshots, or if there were a lot of public images) this
  results in a succession of queries from nova to the glance api server (and on to the database via registry)
  for a small amount of images at a time, when a single request could often return many more or all images.
  For 1000 images the hit is 50X, and so forth.

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