yahoo-eng-team team mailing list archive

[zhang zhenzhong <zzzhang0118@xxxxxxxxx>]

Public bug reported:

Too many period db actions in large scale clusters increase the  load of
database,  especially un-necessary db update or query.

For example， over 1000 nodes, it will be 2 * 1000=2000 db update for
compute_node table in 60s in _update_available_resource, but this two db
update is not necessary if resource usage not changed.

Delete the first and second _update()  in _init_compute_node can reduce
two db update for one node in 60s, if resource usage not changed for
this compute_node.

Then the funtion self._resource_change(compute_node) in _update() make
sense

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1704179

Title:
  Too many period db actions in large scale clusters increase the  load
  of database

Status in OpenStack Compute (nova):
  New

Bug description:
  Too many period db actions in large scale clusters increase the  load
  of database,  especially un-necessary db update or query.

  For example， over 1000 nodes, it will be 2 * 1000=2000 db update for
  compute_node table in 60s in _update_available_resource, but this two
  db update is not necessary if resource usage not changed.

  Delete the first and second _update()  in _init_compute_node can
  reduce two db update for one node in 60s, if resource usage not
  changed for this compute_node.

  Then the funtion self._resource_change(compute_node) in _update() make
  sense

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