Re: Sound skipping problems

From: Jeff Roberson (jroberson_at_chesapeake.net)
Date: 06/08/05

  • Next message: Jeff Roberson: "Re: suspend/resume on T41p broken (again)" 
    Date: Wed, 8 Jun 2005 09:57:46 -0400 (EDT)
To: Pyun YongHyeon <yongari@rndsoft.co.kr>

    On Wed, 8 Jun 2005, Pyun YongHyeon wrote:

    > On Tue, Jun 07, 2005 at 11:32:12PM -0400, Jeff Roberson wrote:
    > > I have a patch that should greatly improve the sound skipping problems
    > > people have under heavy io load. Several people sent me traces that
    > > showed the buf daemon running for hundreds of milliseconds with Giant
    > > held, which can hold up the pcm code. The patch is available at:
    > >
    > > http://www.chesapeake.net/~jroberson/flushbuf.diff
    > >
    > > This changes flushbufqueues to flush multiple buffers instead of one
    > > buffer at a time. It also places buffers we failed to flush at the end of
    > > the list, and uses a sentinal to track our progress through the list.
    > > This almost entirely solved the skipping problem for me. Depending on
    > > user feedback we can do a little more to reduce the time spent processing
    > > here.
    > >
    >
    > Unfortunatly, it seems that it doesn't show much difference.
    > HW: Gateway Solo 5300(UP, P3 700MHz, maestro3 driver)
    >
    > As soon as I started to extract mozilla source the sound playing
    > stopped and the system seems to be freezed.
    > (No response from keyboard input except showing ^C.)
    > It seems that there is no difference with/without witness.

    I added an extra yield to the buf daemon. Try the new patch and see if it
    makes a difference.

    > --
    > Regards,
    > Pyun YongHyeon
    > http://www.kr.freebsd.org/~yongari | yongari@freebsd.org
    >
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  • Next message: Jeff Roberson: "Re: suspend/resume on T41p broken (again)"

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