[Bug 973494] Re: Retracing is way too slow

[Launchpad Bug Tracker]

This bug was fixed in the package apport - 2.0.1-0ubuntu1

---------------
apport (2.0.1-0ubuntu1) precise; urgency=low

  * New upstream bug fix release. Changes since our previous snapshot:
    - problem_report.py, write_mime(): Fix regression from version 1.95: Add a
      value as attachment if it is bigger than 1000 bytes, not if it is bigger
      than 100. (LP: #977882)
    - packaging-apt-dpkg.py: Avoid constructing and updating the apt.Cache()
      objects multiple times, to speed up retracing. Thanks Evan Dandrea.
      (LP: #973494)
 -- Martin Pitt <martin.pitt at ubuntu.com>   Tue, 10 Apr 2012 15:38:11 +0200

** Changed in: apport (Ubuntu)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/973494

Title:
  Retracing is way too slow

Status in “apport” package in Ubuntu:
  Fix Released
Status in “whoopsie-daisy” package in Ubuntu:
  Confirmed

Bug description:
  We're currently only able to process about three core files per minute
  with each retracer. We can fire up more retracers and drop some core
  files at random when we're approaching a high load, both of which
  mitigate this problem to varying degrees. However, we should also
  address the problem that our current retracing code is taking far too
  long to process each core file:

  [4:40pm] jjo: ev: basically afaics we are losing the producer|consumer rate battle
  [4:40pm] mthaddon: ev: basically the rabbitmq queues are fairly consistently increasing in size, but the server itself is very lightly loaded - should we be firing up more retracers, or is there some way of making existing retracers do more work?
  [4:40pm] jjo: ev: while finfolk doesnt get squeezed for load
  [4:41pm] ev: the retracers process in serial, so bringing up more of them would be advisable
  [4:41pm] jjo: ev: FTR I had fired up to ~7 retracers in parallel , which hover'd loadavg~=8 -> got ~3 oopsen per min
  [4:41pm] jjo: ev: but still I couldn't manage to get more than ~3/min

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