We have intermittant problems with writing DVDs where the writing process fails. We suspect that the problem is happening when the DVD driver switches from DMA mode to PIO mode and then in this mode due to the stress in the CPU, writing fails. We want to test this hypothesis by manually changing the writing mode to PIO and then stressing the kernal* to reproduce the error.
Any idea how to achieve this? Can we write some kind of program ourselves or are there any existing tools to achieve this?
*What I mean by 'stressing the kernal' is: See the 'kernal times' in the task manager. A red graph is displayed along with the CPU usage history. I want to make this activity higher. With the usual stress tools, only the CPU usage goes high, not the 'kernal times' graph.