Simples...  IDE is as fast as the slowest device.  Now your new set-up have
your boot device and IDE on the same chain then your disk is running at the
same speed as your DVD drive.

Spend a =A310 (or whatever your currency is) and put in an additional
controller for the DVD.

Alan Melia
w: www.melmac.co.uk

-----Original Message-----
From: ivp [mailto:joecolquitt@clear.net.nz]=20
Sent: 23 November 2010 23:33
To: Microcontroller discussion list - Public.
Subject: [OT] New drive slows processing

Hi all

I've replaced a failed IDE drive with a SATA and notice that
at least two applications are taking much longer than before.
My uninformed guess is that the data buss is not properly
configured

The previous set-up was

Primary Master 80GB IDE (XP boot)
Primary Slave 160GB IDE (failed)
Secondary Master DVD IDE
320GB USB external
1TB USB external

New set-up is

Primary Slave 80GB IDE (XP boot)
Secondary Master DVD IDE
3rd Master 500GB SATA
320GB USB external
1TB USB external

For the time-being I preferred to keep the 80GB as the boot drive
so I don't need to spend time re-installing the hardware, and Desktop
is still the same etc

Two instances of slowing down -

Writing a DVD data disk. It used to take around 15 mins @ 8x,
now it takes 80 mins and CPU useage is almost 100%. Even the
mouse pointer moves jerkily. Verification is down to 1.2x, it used
to be > 8x

Processing a video from avi to rmvb with Real Producer. Time was
generally about 1.5x file duration, eg 30 min clip would take 45 min.
Now it would be almost 2 hours

In both cases, particularly video processing, I note that as the
conversion progresses it gets slower and slower, as if there's some
increasing bottlenecking. I've not found a source-destination
drive combination that's noticeably faster. Perhaps whatever I
chose has to go through some common point which is the problem

Inter-drive (any source-destination) copying seems reasonably fast
though

It's a dual-processor mobo and I think that now one of the two
processors is shouldering almost all of the burden, as seen in Task
Manager. I'm pretty sure that previously the sharing was 80:20,
but now it's 100:0

Any assistance would be appreciated

TIA

Joe

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