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Re: Bad SATA devices performance



ArcosCom Linux User wrote:
Hi guys, I have a problem with my laptop dvd+-rewriter (and posibily the
hard disk too).

Them are SATA devices, and with I need to move many data, all system
performance goes very slow. I'm desesperate, because IDE laptops with less
memory and less speed have better performance than mine.


When I burn DVD's or CD's, all graphical system goes down (in
performance), but CPU is fine, but transactional charge is very high. I
must wait the burn proccess was finish to take control to the system using
graphical interface.

I use FC5 and gnome. To burn I use k3b.

I test 2.6.17.14 and 2.6.18.1 vanilla kernels too.

Any help with kernel params, diagnose/configuration tools that allow me
solve this problem?
For a visual idea of how it is performing install gkrellm, and add monitors for each of the physical disk and dvd drive, along with cpu's might give some hint. Also, if there is an image being created to write to the CD, perhaps this would kill half-two two thirds of the available disk bandwidth. For example if the image is being created in /tmp, but the source files are on another partition, there might be excess {necessary} disk I/O.

DaveT.


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