Brian Warner wrote:
>
> I was wondering if anyone else is seeing what I'm seeing: while I'm playing
> songs with "xmms", my CPU utilization gets pegged at 100% system, and "top"
> reports that xmms is using almost all of it:
>
> Mind you, top is obviously having some problems with the CPU timing here. But
> I do notice other CPU-intensive jobs slowing down noticeably until I pause
> XMMS, and heavy video activity (moving windows around, scrolling Netscape)
> has more of a detrimental effect on audio playback than it used to, so I don't
> think it is entirely an artifact of some /proc/stat change. I'm using a
> trident card, and my hunch is that xmms is using either a blocking write or
> select() to wait for the output buffer to become free, and the driver is
> returning right away instead of blocking (or indicating writeability when it
> shouldn't).
>
> I don't know when exactly this started, but it was probably some time in the
> 2.3.40s . I'm at 2.3.99-pre2 now, and didn't see any trident.c changes in
> -pre3. I usually play my mp3s while doing lots of other stuff, so I didn't
> notice the unusual CPU utilization at first. I believe the trident driver has
> seen some big changes in the past few months, perhaps one of them has a
> problem?
>
> Other mp3 players (mpg123, freeamp) don't have this problem on the same
> kernel/hardware, and xmms doesn't have this problem with the same kernel on a
> different system (a laptop with an nm256 sound chip), so I suspect it's
> something about the way xmms is doing its audio output triggering a trident
> driver bug.
>
> Is anyone else seeing this? If so, I'll go build some old kernels and try to
> see when the problem appeared. If not, I'll find a different player..
>
> kernel 2.3.99-pre2
> xmms version 1.0.1, using the "OSS output driver v1.0.1"
> kernel: Trident 4DWave/SiS 7018 PCI Audio, version 0.14, 22:59:12 Mar 19 2000
> kernel: trident: Trident 4DWave DX found at IO 0xd000, IRQ 10
> kernel: ac97_codec: AC97 Audio codec, vendor id1: 0x8384, id2: 0x7605 (SigmaTel STAC9704)
>
Could you please try the driver on xmms 0.9.5 ?? xmms 1.0 seems have some
problem with the driver. I don't know what's wrong but I am working hard
to identify it.
Ollie
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This archive was generated by hypermail 2b29 : Fri Mar 31 2000 - 21:00:18 EST