Hi,

> With the last patch I submitted to this list, the data gets moved with
> the DMA engine just fine. So I suppose it's "useful" in that regard.
> It's just that there's only a marginal increase in transfer speed. As
> far as I can tell, the problem stems from the fact that the transfers
> between the disk and the SCSI controller are still happening
> asynchronously, which is slow regardless of the fact that the DMA
> engine, not the CPU, is pushing the data around. The way to fix this is
> to enable synchronous transfers.

That's definitely a step in the right direction! What about processor
utilisation? Even if actual transfer speed is not improved, reducing
overhead would be most welcome. After all, asynch SCSI is still much
faster than nfs over 10 Mbps ethernet, so this may improve compile times.

Has this been pulled into current?

John Klos