Re: IDE Performance lack !

[Jakob Østergaard]

On Sat, May 26, 2001 at 05:16:42PM -0700, Jaswinder Singh wrote:
> >
> > RedHat 7.1 - IDE IBM 41.1 GIG
> > Update to 2.4.5 -> noticed, that hdparm -t /dev/hda went down from 10
> > MByte/sec to 1.9 MByte/sec
> > Any special Options, beside ide-scsi driver activated ..
> >
> > Anybody noticed the same problem ? Any clues ?
> >
> 
> yes , i am also not happy with IDE performance of Linux . That why i dont
> use Hard disk in my Target machines ;)
> 
> When ever i copy big data (around 400 to 700 MB ) from one partion to
> another my machine do not response at all (i can not work on another shell)
> during data transfer.

The answer for both of you is:

  hdparm -d1 /dev/hd{whatever}

Without DMA enabled, performance is going to suck.  1.9 MB/sec is actually pretty
good without DMA   ;)

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