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Date:      Mon, 20 Nov 2000 05:04:33 -0800
From:      Julian Elischer <julian@elischer.org>
To:        Stanislav Grozev <tacho@orbitel.bg>
Cc:        current@freebsd.org
Subject:   Re: -current scheduler strangeness
Message-ID:  <3A192161.7186C803@elischer.org>
References:  <20001120142326.A97732@thing.orbitel.bg>

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Stanislav Grozev wrote:
> 
> Hi,
> today I upgraded my 5.0-CURRENT from PRE_SMPNG to -current from about 5-6
> hours. everything went fine, the system is working, but I now notice the
> following: whenever I compile something (say a port) and play an mp3
> in xmms at the same time, the mp3 playing is frequently interrupted,
> or loops for a second. when I stop the compile, the mp3 files are playing
> ok. with PRE_SMPNG I never experienced such behavior, even with 2 or 3
> simultaneous compiles. I am attaching the dmesg output and my kernel
> config file if that would be helpful.
> 
> as you can see, pcm shows:
>         pcm0: hwptr went backwards 3896 -> 3720

I get this too. However for me it's related to using the mouse
(though maybe using the mose uses CPU and it's actually CPU....)

I'm using the snd_maestro module.
This has been happenning since before the SMPNG tag was layed down so
it's not
related to the new SMP code..


> 
> with PRE_SMPNG it didn't show such things, and when I do not load the machine
> with compiles, it never displays such messages and plays fine.
> 
> any info will be greatly appreciated.
> 
> -tacho
> 
> --
>    [i don't follow] | [http://daemonz.org/ || tacho@daemonz.org]
>    [everything should be made as simple as possible, but no simpler]
>    0x44FC3339 || [02B5 798B 4BD1 97FB F8DB 72E4 DCA4 BE03 44FC 3339]
> 
>   ------------------------------------------------------------------------
>             Name: THING
>    THING    Type: Plain Text (text/plain)
>         Encoding: quoted-printable
> 
>    dmesgName: dmesg
>         Type: Plain Text (text/plain)
> 
>    Part 1.2Type: application/pgp-signature

-- 
      __--_|\  Julian Elischer
     /       \ julian@elischer.org
    (   OZ    ) World tour 2000
---> X_.---._/  presently in:  Budapest
            v


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