- Status Closed
- Percent Complete
- Task Type Patches
- Category Codecs
- Assigned To No-one
- Operating System PortalPlayer-based
- Severity Low
- Priority Very Low
- Reported Version
- Due in Version Undecided
-
Due Date
Undecided
- Votes
- Private
FS#6670 - Small dct32 routine for the MPA codec
The dct32 routine in libmad/synth.c is pretty big and it causes lots of cache misses. I have written a smaller one in ARM assembler. It isn't as optimal in terms of number of arithmetic operations, but it's much more cache friendly because of smaller code size. It helps a lot on Iriver iFP where SRAM is really slow. I would like someone with other ARM targets to check if it helps on them as well.
The routine is currently compiled to SRAM, but I suppose it's worth trying to move it to IRAM.
Closed by tmal
2007-02-27 23:53
Reason for closing: Duplicate
Additional comments about closing: Warning: Undefined array key "typography" in /home/rockbox/flyspray/plugins/dokuwiki/inc/parserutils.php on line 371 Warning: Undefined array key "camelcase" in /home/rockbox/flyspray/plugins/dokuwiki/inc/parserutils.php on line 407
2007-02-27 23:53
Reason for closing: Duplicate
Additional comments about closing: Warning: Undefined array key "typography" in /home/rockbox/flyspray/plugins/dokuwiki/inc/parserutils.php on line 371 Warning: Undefined array key "camelcase" in /home/rockbox/flyspray/plugins/dokuwiki/inc/parserutils.php on line 407
Moved to FS#6705
Loading...
Available keyboard shortcuts
- Alt + ⇧ Shift + l Login Dialog / Logout
- Alt + ⇧ Shift + a Add new task
- Alt + ⇧ Shift + m My searches
- Alt + ⇧ Shift + t focus taskid search
Tasklist
- o open selected task
- j move cursor down
- k move cursor up
Task Details
- n Next task
- p Previous task
- Alt + ⇧ Shift + e ↵ Enter Edit this task
- Alt + ⇧ Shift + w watch task
- Alt + ⇧ Shift + y Close Task
Task Editing
- Alt + ⇧ Shift + s save task
What are we looking for? I've tested this on a 5.5G 30GB Video iPod
As tested by Preglow on Feb 18th (see irc logs), it doesn't improve performance on Ipod (I'm not sure which model). We were looking for smaller boost ratio (info→debug→view audio thread).
Okay what about
FS#6357does that help or is it an outdated patch?