Optimization flags not used
Bug #1390965 reported by
Bob Boberson
This bug affects 1 person
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| Mythbuntu |
New
|
Undecided
|
Unassigned | ||
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-
Doing this wll significantly improve mythtv's performance for all users
| tags: | added: downstream |
Revision history for this message
| Stuart Morgan (MythTV) (gbee) wrote | #1 |
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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.