I see the samething with linux-2.5.1-pre1, cvs alsa, alsaout-0.9beta8,
xmms 1.25 and via686a driver. I can provoke xmms into the 100% thing
by doing make dep on the linux source for example. Then %System Time
rises to 30-60% and 1 xmms thread takes up the rest.
Thread is doing
0x40506812 in snd_pcm_hw_writei (pcm=0x851c618, buffer=0x81b4b28,
size=576) at pcm_hw.c:323
#1 0x404fc8f6 in snd_pcm_writei (pcm=0x851c618, buffer=0x81b4b28,
size=576) at pcm_local.h:347
#2 0x404c04f4 in alsa_write (data=0x81b4b28, length=2304) at audio.c:253
#3 0x40561948 in mpg123_do_layer3 (fr=0x40574f20) at layer3.c:2086
#4 0x4054e855 in decode_loop (arg=0x40c01418) at mpg123.c:454
#5 0x401a9e95 in pthread_start_thread (arg=0xbf3ffbe0) at manager.c:274
repeatedly.
In audio.c we have
251 while(length > 0)
252 {
253 written_frames = snd_pcm_writei(alsa_pcm, data, length /
alsa_frame_size);
254 // printf("Wr: %i, prop: %i, framesize: %i\n",
written_frames, length/alsa_frame_size, alsa_frame_size);
255 if(written_frames > 0)
256 {
257 written = written_frames * alsa_frame_size;
258 alsa_total_written += written;
259 length -= written;
260 data += written;
261 }
262 else if (written_frames == -EAGAIN || (written_frames > 0
&& written_frames < (length / alsa_frame_size)))
263 {
264 snd_pcm_wait(alsa_pcm, 1000);
265 }
266 }
snd_pcm_writei is returning -32 repeatedly. The logic controlling the
else if looks wrong: (written_frames > 0) will always be false.
Changed to
else if (written_frames == -EAGAIN || (-written_frames < length /
alsa_frame_size))
This seemed to survive make dep (only tested briefly).
Miha Tomšič wrote:
> Hello!
>
> I am using alsaout 0.9beta8 on alsa 0.9beta10/10a. Today I noticed that
> CPU load is pretty high compared to OSS output. There is also no scope or
> analizer output in the xmms window.
>
> And from time to time the load goes up to 100% and playback just stops and
> xmms is more or less dead but the cpu is mostly over 110%. I have to kill
> it.
>
> Anybody else noticed that? Any ideas?
>
> driver ens1370
> linux 2.4.7+ll (but not enabled today)
>
> Miha...
>
> - Miha Tomšič --- C. na postajo 55 -- SI-1351 Brezovica pri Lj. --- SLOVENIA -
>
>
> _______________________________________________
> Alsa-user mailing list
> [EMAIL PROTECTED]
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>
>
>
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