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

[Brian J. Tarricone]

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 <[EMAIL PROTECTED]> 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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