[Fwd: hdd & sound]

[Jonathan Masters <mastersj@periscope-systems.freeserve.co.uk>]

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--
Jonathan C. Masters                     (jonathan@oxlug.org)
                                        PGP: www.brookes.ac.uk/~95227860/KEY

           "Upon this rock I will build my church,
            and the gates of hell shall not prevail against it".

                 -- Matthew 16, 17-18



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From: Jonathan Masters <mastersj@periscope-systems.freeserve.co.uk>
To: Mike Ricketts <rickettm@ox.compsoc.net>
Subject: Re: hdd & sound
Date: Wed, 11 Aug 1999 20:51:55 +0100
Message-ID: <37B1D45B.768FDD6A@periscope-systems.freeserve.co.uk>

Has Mr Gates been at the kernel source? (well you did say "evil"). Seriously
though, it's scheduler related. Someone please fix this as writing a cd now makes
my 2.2.10 system *UNUSEABLE* since I must have sound to work. Music keeps me
happy. Besides, when this happens, the processor load is all of 4% or so - hardly
enough to cause problems - since it happens on PCI hardware too - it aint my ISA
soundcard (SB 64 AWE Gold) - interestingly, it haoppens when ripping cd's too -
but cdrecord causes less than cdparanoia (my hdds are on one controller, the
cd-writer/cdrom are on the other.). I've already posted my machine specs but more
is available in someone wants. Howz about Alan/Linus comments on this so we know
once and for all? Thanx.

Mike wrote:

> On Sat, 7 Aug 1999, Wakko Warner wrote:
>
> > I'm noticing this one one of my machines.  When writing to a hard drive, the
> > sound drags.  The machine I'm on has piix4 ide and an isa scsi card.  I'm
> > playing sounds from the drive on the scsi card (aha1510 I think is the scsi
> > card).  I tried writing to both an ide and scsi drive, both drag the sound.
> > Sound card is an SB16 pnp /w ide port (not disablable unfortunately).  I had
> > a similar problem on an isa ide card playing sounds off of the hard drive
> > (like 44k 16bit 2ch sound off the drive, sound card was an ess card).  My
> > home box that this is happneing on is 2.2.7.  The one with the isa ide is no
> > longer active, but it was running 2.0.36.
> >
> I see much the same thing under (extremely) heavy disk load, both on
> onboard piix4 ide, and on an onboard aic7??? scsi.
>
> Things it isn't:
>   hardware - too many people are seeing the same thing for that
>   driver specific - it happens on both ide and scsi, and with both sb and
>                     ess cards
>   anything blindingly obvious
>
> Currently I suspect something evil either in sound_core.c or sound_timer.c
> or (more likely) something scheduler related, but this is wild guessing.  Any
> ideas?
>
> --
> Mike <rickettm@ox.compsoc.net>
>
> Q:      What's yellow, and equivalent to the Axiom of Choice?
> A:      Zorn's Lemon.

--
Jonathan C. Masters                     (jonathan@oxlug.org)
                                        PGP: www.brookes.ac.uk/~95227860/KEY

           "Upon this rock I will build my church,
            and the gates of hell shall not prevail against it".

                 -- Matthew 16, 17-18