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Old 06-22-2003, 05:39 PM   #1
Stevetgn
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Registered: Jun 2003
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Question DMA & Slow hard driver performance


Folders, directories & application are slow openning comparded with my WinXP installation which is very "snappy", click a folder it opens imediately. How do I check if DMA is enabled for my two hard drives. Or is something else causing this?

Thanks in advance

Steve (The_Ginger_Ninja)
 
Old 06-22-2003, 05:57 PM   #2
Mara
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From console (as root) use
hdparm -I /dev/hda
(if you're using hda).

I think that the performance may be connected with something differnet. Are you sure you're not running services you don't need?
 
Old 06-22-2003, 06:13 PM   #3
contrasutra
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What read speeds should a 7200rpm ATA100 IDE drive normally be getting w/ DMA enabled?
 
Old 06-23-2003, 04:39 PM   #4
Mara
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My disk (80GB WD, 7200rpm) does 64MB with 35MB/s with DMA. Maybe it will be helpful for you (there are many processes etc, so the real result should be faster).
 
Old 06-23-2003, 05:25 PM   #5
contrasutra
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Yeah, mine does 40mb/s, so its all working good.
 
Old 06-24-2003, 07:30 PM   #6
jpforte
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Talking

Hey I just read on another page that it is the kernel version

Try searching "toshiba tecra redhat 9 slow" and I found that a problem with DMA is inherent in the 2.4.20 kernel and AGP.

The solution was to install the latest 2.4.21 kernel ...
Which I am not about to do on the laptop.

I just rebooted my rh8 kernel back to 2.4.18 and ...

It's back to normal (fast speed) for a P2, and I am pretty picky.

Now if someone knows how I can get an RPM for RH in the new kernel version let me know.
 
  


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