Re: cdrecord issues since 2.6 move

From: Paul Gear (paul_at_gear.dyndns.org)
Date: 08/30/04

  • Next message: Christophe TROESTLER: "a2ps -> gv font"
    To: debian-user@lists.debian.org
    Date: Tue, 31 Aug 2004 06:38:33 +1000
    
    
    

    Paul E Condon wrote:
    > ...
    >>And further: i've just burned a 643 Mb image to a 24x CD-RW, and it used
    >>almost zero CPU. In the past (under kernel 2.4.19 on RHL9), it took a
    >>lot more CPU, and caused the foreground application to run a somewhat
    >>jumpily. Now, it's smooth sailing - i didn't even notice it happening.
    >>
    >
    > I understand that DMA is turned on by default in 2.6.x

    I had it on before as well. Maybe it's just 2.6's superior scheduling
    method, but it certainly seemed a lot smoother to me...

    -- 
    Paul
    <http://paulgear.webhop.net>
    --
    War is an instrument entirely inefficient toward redressing wrong; and
    multiplies, instead of indemnifying losses.
    	-- Thomas Jefferson <http://www.quotedb.com/quotes/1770>
    
    

    -- 
    To UNSUBSCRIBE, email to debian-user-REQUEST@lists.debian.org 
    with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org
    


  • Next message: Christophe TROESTLER: "a2ps -> gv font"

    Relevant Pages

    • Re: A simple question about DMA, please help me.
      ... held by the DMA controller and the CPU is set idle until this transfer ... memory to fetch instructions while the DMA transfer is continuing. ... The PCI bus changed that -- it eliminated the separate lines for each ...
      (comp.lang.asm.x86)
    • Re: Volatile variables
      ... I/O methods ("DMA" and the like) that completely bypass the CPU. ... then DMA bypasses the on-chip cache. ... memory. ...
      (comp.lang.c)
    • Re: performance problem
      ... DMA is enabled on all drives. ... USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND ... > problematic daemon running. ...
      (Debian-User)
    • PROBLEM: DMA over CPU" memory leak in Kernel 2.6.8.1
      ... "DMA over CPU" memory leak if I burn Audio-CDs ... d0000000-dfffffff: PCI Bus #01 ...
      (Linux-Kernel)
    • Re: Understanding DMA
      ... > What I understand about DMA is that the CPU is idle during DMA cycles. ... > 'offloading' the data transfer to the DMA controller if the CPU cant ...
      (comp.arch.embedded)