linux-traipu team mailing list archive

["Stuart Morgan \(MythTV\)" <1390965@xxxxxxxxxxxxxxxxxx>]

Optimisations aren't universally better, that's why compilers don't
apply them by default. Having applied the patch to the development
version (0.28) the optimisations broke audio sample rate conversion, and
from past experience -O3 has probably negatively impacted video
decoding.

Realistically we don't want to be building with anything more than -O2,
-O3 optimisations are at best experimental.

-- 
You received this bug notification because you are a member of UBUNTU -
AL - BR, which is subscribed to Mythbuntu.
https://bugs.launchpad.net/bugs/1390965

Title:
  Optimization flags not used

Status in Mythbuntu, Ubuntu derivative focused upon MythTV:
  New

Bug description:
  MythTV ticket 12015 outlines how mythtv is not compiled with any
  optimizations at all.

  Mythtv developers seem to not care at all, but this has major
  performance implications.

  It can be worked around by simply configuring mythtv with "--extra-
  cxxflags=-O3"

  Doing this wll significantly improve mythtv's performance for all
  users

To manage notifications about this bug go to:
https://bugs.launchpad.net/mythbuntu/+bug/1390965/+subscriptions