Hi Rory, On Sat, 2008-01-05 at 22:56 +0000, Rory Verleysen wrote: > Hi > > Configuration: > Linux 2.6.23.8 preemt debian unstable > PIV 2.53Ghz, 2048 MB DDR PC3200 > Hercules DJ Control MP3 using usbhid.ko > Mixxx 1.6.0 beta 1 configure options: djconsole_legacy=1 optimze=2 > > Status Hercules DJ Control: > Every button, fader,.. working > Obviously the special effect & sample button's are not > No led's are highlighting > > Status mixxx: > Segmentation fault on booting while not root
Can you run this in gdb and create a backtrace for us? http://mixxx.sourceforge.net/wiki/index.php/Backtraces We've got one known "segfault on startup" bug, but it's actual cause has evaded our attempts so far. > Serious performance issues > The program uses an excessive amount of cpu power, laughingly higher than eg > xmms. > Resulting into glitches or hanging of sound, adjusting buffer has no effect. > Setting pid to highest priority makes it usable but glitches in sound remain. > Is this a known problem? Ok, I need to more some more information. 1) Are you using multiple soundcards? (ie. master output on one soundcard, headphone output on another) 2) Are you using headphone cueing? (ie. master and headphone output on a single soundcard) 3) Can you elaborate on "hanging of sound"? - Does Mixxx's interface freeze? I also experience fairly crappy performance on my P4 2.53 GHz, which I want to address. I need to do more in-depth profiling, and I may need help because I'm not totally trusting the results I'm getting. (IIRC, I may need to turn off optimizations?) To defend Mixxx for a moment though - it does a hell of a lot more processing to the audio than XMMS does. XMMS simply decodes your MP3 to a buffer and sends it to your speakers. Mixxx provides realtime EQing, mixing (gains, volume, crossfader, all of which take CPU time), waveform rendering, pitch bending, and all sorts of other things. These things do add up, but CPU usage seemed to get noticeably worse over the summer, and I'm not convinced it's the EQ stuff anymore (since the old EQ code appears to run slow too). > I hope to see the Detect Song BPM on Import function available soon > Yes, it's on our TODO list. I hope that we'll be able to code this before the 1.6.0 final release. > Apart from this, it is the only linux dj program where i can successfully use > my hercules dj control mp3. Thanks for your feedback, Albert ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Mixxx-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/mixxx-devel
