On Wed, Apr 26, 2000 at 11:53:36AM -0700, Steve Rosenbluth wrote:
> IDE hard drives use DMA heavily at times. What is the effect of DMA on
> RTLinux interrupts handlers and periodic processes. Can DMA prevent
> interrupts from happening at a hardware level, causing increased RT
> latencies and jitter ?
DMA can increase latencies and jitter. One (weak) solution is to set the PCI delays
on the bus low.
>
> -- Steve Rosenbluth
>
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