Re: [gentoo-amd64] Bad performance on doom3 with alsa and oss

[David Guerizec]

Le Vendredi 20 Janvier 2006 09:36, Etienne Imguimbert a écrit :
> Dear all
>
> Here is the alsa section of the FAQ about Linux version of doom3:
> http://zerowing.idsoftware.com/linux/doom/#head-8c36163f1dfc3a253ef72c0f821
>b0b0dd2fc17b1
>
> This FAQ says about amd64 system:
> "on amd64 systems you may need to get the snd-ioctl32 module loaded in "
>
> What does it mean? I don't understand the meaning of this sentence (excuse
> me but english is not my mother tongue). What is the snd-ioctl32 module ?

modprobe snd-ioctl32

CQFD!

David

> Thanks in advance,
> Best regards,
>
> Etienne
>
> 2006/1/16, Etienne Imguimbert <eimguimbert@×××××.com>:
> > Le Dimanche 15 Janvier 2006 05:48, Eric Augustus a écrit:
> > > On Fri, Jan 13, 2006 at 09:34:32AM +0100, Etienne Imguimbert wrote:
> > > >    Dear gentoo amd64 users
> > > >
> > > >    I've installed doom3 via the emerge command, and I have several
> > > >    problems of performance. I tried several configurations:
> > > >
> > > >    - when I switch to alsa in doom3, I get very noisy sounds (I get
> > > >    several messages of rejected packets by alsa in the shell)
> > >
> > > You could try changing to the alsa PCM setting, "seta s_alsa_pcm" to
> > > "surround51" or anything else besides "default" in your DoomConfig.cfg.
> >
> > I
> >
> > > had issues with the default setting on my setup and switched. Now I get
> > > pretty decent sound.
> > >
> > > >    - when I switch to oss, I get huge slowdowns in the game (I think
> > > >    there is a problem with the OSS emulation by alsa)
> > > >
> > > >    - when playing timedemo demo1 in the doom3 prompt, I get a good
> >
> > number
> >
> > > >    of fps (about 60), but this benchmark is played without sound, so
> > > > I deduce that I have problem with sounds.
> > >
> > > The demo is not supposed to have sound.
> > >
> > >
> > > --
> > > Eric Augustus
> > > shrike@×××××××××.com
> > > -----------------
> > > For the sake of argument I'll ignore all your fighting words.
> > >              -- Larry Wall in <199710221710.KAA24242@××××.org>
> >
> > Dear Eric,
> > I've modified the file DoomConfig.cfg as you indicate, and there is no
> > sound
> > at all when I switch to alsa. The message I get is:
> >
> > ------------- Warnings ---------------
> > during DOOM 3 initialization...
> > WARNING: idPort::SendPacket: bad address type NA_BAD - ignored
> > WARNING: sound subsystem disabled
> >
> > 2 warnings
> >
> > When I specify seta s_alsa_pcm "default" in the config file, I get very
> > noisy
> > sounds, and the messages in the shell are:
> > ....
> > idAudioHardwareALSA::Write: 4096 frames overflowed and dropped
> > snd_pcm_writei failed: Resource temporarily unavailable
> > snd_pcm_writei short write: 940 out of 1024
> > snd_pcm_writei short write: 1880 out of 2048
> > snd_pcm_writei short write: 940 out of 1024
> > idAudioHardwareALSA::Write: 4096 frames overflowed and dropped
> > snd_pcm_writei short write: 1880 out of 2048
> > snd_pcm_writei short write: 940 out of 1024
> > snd_pcm_writei short write: 940 out of 1024
> > snd_pcm_writei short write: 940 out of 1024
> > idAudioHardwareALSA::Write: 4096 frames overflowed and dropped
> > snd_pcm_writei failed: Resource temporarily unavailable
> > snd_pcm_writei short write: 940 out of 1024
> > ....
> >
> > I precise:
> > I've got arts running using alsa output, but I specify it to suspend if
> > inactive during 30 secondes. I tested sounds in doom3 with and without
> > arts
> > launched: it changes nothing.
> >
> > Also when running doom3, the cpu frequency is max (2.2 GHz), so I don't
> > think
> > that my problem would come from bad configured cpuscaling...
> >
> > I don't know what to do to have good perfs with good sounds. (Remember if
> > I
> > switch to oss backend, perfs are low and sounds are just acceptable).
> >
> > Best regards,
> >
> > Etienne Imguimbert
> >
> >
> >
> > --
> > gentoo-amd64@g.o mailing list

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