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* High CPU usage for disk I/O while DMA is enabled
@ 2004-07-25 11:05 Nesimi Buelbuel
  2004-07-25 14:50 ` Rudo Thomas
  0 siblings, 1 reply; 5+ messages in thread
From: Nesimi Buelbuel @ 2004-07-25 11:05 UTC (permalink / raw)
  To: linux-kernel

Hi,

my CPU usage goes up to 100% while copying files from CD to HDD or from
HDD to HDD.
I have enabled DMA successfully on all of my HDD.

<snip>
/dev/hda:
 multcount    =  0 (off)
 IO_support   =  0 (default 16-bit)
 unmaskirq    =  0 (off)
 using_dma    =  1 (on)
 keepsettings =  0 (off)
 readonly     =  0 (off)
 readahead    = 256 (on)
 geometry     = 19929/255/63, sectors = 320173056, start = 0
</snip>

I am experiencing this since my Kernel upgrade from the 2.4.x series to
the current 2.6.7 Kernel.
So DMA is definetely running on my box. But the CPU is utilizing too
much while copying files.

Is there anything that I have forgot to consider in the "new" 2.6.x
Kernel series for DMA settings?

Thanks for any hints!

 -- 
 Nesimi Buelbuel <nesimi.buelbuel@gmx.de>
 PGP-Key-ID: 0x2FAE691C 
 "This World is about to be Destroyed!"

^ permalink raw reply	[flat|nested] 5+ messages in thread
[parent not found: <2lP3i-3pV-13@gated-at.bofh.it>]

end of thread, other threads:[~2004-07-25 16:28 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2004-07-25 11:05 High CPU usage for disk I/O while DMA is enabled Nesimi Buelbuel
2004-07-25 14:50 ` Rudo Thomas
2004-07-25 15:25   ` Nesimi Buelbuel
2004-07-25 15:42     ` Rafael Pereira
     [not found] <2lP3i-3pV-13@gated-at.bofh.it>
     [not found] ` <2lSDW-5Ln-13@gated-at.bofh.it>
     [not found]   ` <2lT6Y-69m-27@gated-at.bofh.it>
     [not found]     ` <2lTqe-6jZ-9@gated-at.bofh.it>
2004-07-25 16:28       ` Nesimi Buelbuel

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