Re: [Alsa-user] sb live dma buffer alloc failure?

["Brian J. Tarricone" <bjt23@ece.cornell.edu>]

just a quick update - i installed yesterday's cvs of alsa-driver, and i 
haven't had any problems (no alloc failures or apps locking up) since 
then.  i've tried to stress test it a bit (filling up ram, opening and 
closing the pcm device rapidly), and i'm pleased to say no problems.  i 
looked at the cvs logs, quite a bit has been done in sg_buf.c since rc7, 
perhaps something there had an impact?

even if this is just a side-effect of other work, thanks for the fix, 
guys ^_^

    -brian

Takashi Iwai wrote:

>At Wed, 05 Feb 2003 02:15:27 -0500,
>Brian J. Tarricone <bjt23@ece.cornell.edu> wrote:
>  
>
>>forgive me for cross-posting, but i've found references to this problem 
>>on both lists, so...
>>    
>>
> 
>this should go to alsa-devel, not alsa-users...
>
>  
>
>>so then i noticed rc7, and tried that (unpatched, fresh from the website).
>>
>>things are somewhat worse.  i load up xmms, and start playing mp3s.  
>>things seem fine, playing for hours until i get bored of some songs, put 
>>it on random play, and keep hitting "next song" until i find something i 
>>feel like listening to.  if i press 'next' roughly once per second, 
>>after about 15-20 songs xmms locks up hard and jumps to using 100% cpu.  
>>kill -9 doesn't work, and any other app that tries to use the pcm device 
>>locks as well.  i have to reboot to fix it.
>>    
>>
>
>which kernel version are you using?
>
>the new code on rc7 simply tries allocation via vmalloc().
>if it fails, it means that the system resource is really exhausted.
>or, there might be memory leak or so...
>
>
>Takashi
>
>  
>



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