On Mon, Jan 29, 2001 at 12:06:01PM -0500, Larry Marshall wrote:
>
> > The real physical problem for CD-R drives (or even CD drives playing
> > games) is that the master blocks the slave. Anytime the system wants to
>
> True, I didn't really discuss why, only what the result was :-)
>
> > To get around this problem, Intel introduced dual IDE controllers years
> > ago in their chipsets. Normal configuration was for one controller to talk
>
> The problem is that many of us have 4 devices on those two channels
> :-)
One option is to get a PCI card with additional IDE channels, or upgrade
to SCSI (which is MUCH more expensive.) If you have a need to large amounts
of disk, you may even opt for some of the newer IDE RAID cards and disable
the IDE interfaces on the motherboard.
Of course this doesn't address the problem of laptops... It's too bad that IDE
is such a horrible interface.
> > I found out a few months ago that Linux takes a default stance of not
> > enabling DMA on the IDE controllers. This lowers disk throughput a lot. For
>
> Hmmm...would you know if that's the change that's taken place between
> v7.1 and v7.2 of Mandrake (2.2.15 -> 2.2.17 kernel)? I had no streams
> problems with any version of Linux prior to LM7.2 but it's real enough
> with it.
>
> > I am NOT at all familiar with laptop architectures these days, but I have
It depends on the laptop, but some (many) only have a single IDE channel.
You will be able to tell more by looking at the output of dmesg in linux.
It would be nice if the kernel had a way to turn DMA on / off via the
/proc file system... Then it wouldn't require a rebuild.
_______________________________________________
Win4Lin-users mailing list
[EMAIL PROTECTED]
https://lists.netraverse.com/mailman/listinfo/win4lin-users
