Messages in this thread | | | Date | Mon, 28 Jul 2003 00:06:39 -0700 (PDT) | From | Raghava Vatsavayi <> | Subject | DMA Mapping??? |
| |
Hi,
Our ethernet driver performance is not so good in powerpc machines. I have attached a link for a patch and brief description below, which talks about alignment of dma memory for rx and tx buffers. So my question is, Will there be increase in performance on powerpc machines if I also align my tx/rx dma pointers?????
Description: PCI bridge peculiarities mean the insufficiently aligned DMAs perform terribly on Power4 hardware. This hack copies and realigns packets to improve performance.
http://oss.software.ibm.com/linux/patches/?patch_id=881
Please mail me at rajuraghava@yahoo.com
Cheers Raghav.
__________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software http://sitebuilder.yahoo.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |