[Bug 1281366] Re: ip command becomes slower with large number of network devices

[Chris J Arges]

I can confirm this problem. I'll look into why this patch is causing
this.

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Title:
  ip command becomes slower with large number of network devices

Status in “iproute” package in Ubuntu:
  Fix Released
Status in “iproute” source package in Precise:
  Fix Committed
Status in “iproute” source package in Quantal:
  Fix Committed

Bug description:
  [Impact]
  When using iproute commands with a large number of network devices (virtual ethernet adapters, etc) iproute performance becomes much slower.

  [Test Case]
  1) Download attached 'make_fake_routers.sh' and 'parse.py' scripts.
  2) ./make_fake_routers.sh 3000 ip > results
  3) ./parse.py results

  You should be able to graph and clearly see a performance improvement
  with the fix than without it.

  [Regression Potential]
  This patch fixes the issue:
  https://git.kernel.org/cgit/linux/kernel/git/shemminger/iproute2.git/commit/?id=f0124b0f0aa0e5b9288114eb8e6ff9b4f8c33ec8
  This patch is upstream and is currently in saucy and beyond.

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