Re: Using DMA for memcpy()
Jason Hecker <[email protected]>
| Newsgroups | gmane.os.netbsd.devel.performance |
|---|---|
| Message-ID | <[email protected]> |
> I very much doubt you would get any improvement, in fact it would > be hard to not lose out badly. I've been mulling over it a bit more since I posted the query, and you're right. Cache coherency would be a big problem, as would scheduling the DMA or trying to implement some piecemeal sharing mechanism so no one process is waiting too long to use the controller. Forget I asked. ;) Better off just using the DMA controller as needed as some sort of background copier. -- Cheers, jASON --------------------------------------------- --== http://www.wireless.org.au/~jhecker ==-- ---------------------------------------------