yahoo-eng-team team mailing list archive

[Matt Riedemann <mriedem.os@xxxxxxxxx>]

Public bug reported:

There was a fix in Mitaka https://review.openstack.org/#/c/256073/ to
cache the security group driver once it was loaded per process. That
cache was removed in Newton https://review.openstack.org/#/c/325684/. I
put up a test patch to see how many times the security group driver gets
loaded https://review.openstack.org/#/c/652783/ and in the neutron-
grenade-multinode job the nova-api logs show it getting loaded over 1000
times (browser count hit tops out at 1000). So the fix from mitaka was
definitely regressed in newton and we should add the driver cache code
again.

** Affects: nova
     Importance: Low
         Status: Triaged


** Tags: performance

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https://bugs.launchpad.net/bugs/1825018

Title:
  security group driver gets loaded way too much in the api

Status in OpenStack Compute (nova):
  Triaged

Bug description:
  There was a fix in Mitaka https://review.openstack.org/#/c/256073/ to
  cache the security group driver once it was loaded per process. That
  cache was removed in Newton https://review.openstack.org/#/c/325684/.
  I put up a test patch to see how many times the security group driver
  gets loaded https://review.openstack.org/#/c/652783/ and in the
  neutron-grenade-multinode job the nova-api logs show it getting loaded
  over 1000 times (browser count hit tops out at 1000). So the fix from
  mitaka was definitely regressed in newton and we should add the driver
  cache code again.

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