On Tuesday, March 22, 2005 4:04 PM, Dan Malek wrote: > On Mar 22, 2005, at 11:56 AM, Gilad Rom wrote: > >> Has anyone ever tried using a Gigabit PCI >> adapter with one of the Au1x00 boards? Any success? > > Just remember that the Au1x00 boards are 32-bit , 33 MHz, > 3.3V PCI, so choose your boards accordingly. Please don't expect the > Au1x00 to run the TCP/IP stack anywhere near Gigabit speeds ..... :-) We have researching this topic for a little while, particularly from the FPGA standpoint. Although not specific to MIPS, I offer a few links which discuss the considerations for successfully sustaining gigabit ethernet transport. The "Gigabit System Reference Design", pg. 49 offers some benchmarks obtained using MontaVista Linux on a PowerPC 405. Key takeaways are that the data payload must not be handled by the stack (DMA direct from framebuffer/fifo/sdram) and must use jumbo (5000,9000) ethernet frames. Best Regards, -bogdan --- EE Times, "Altera Demonstrates FPGA for video-over-IP", March 2005, http://www.embedded.com/showArticle.jhtml?articleID=159903648 Altera, "Video Over IP Reference Design", March 2005, http://www.altera.com/solutions/refdesigns/sys-sol/broadcast/ref-video.html Xilinx, "Gigabit System Reference Design", June 2004, http://direct.xilinx.com/bvdocs/appnotes/xapp536.pdf Xilinx, "Considerations for High-Bandwidth TCP/IP PowerPC Applications", XCell Journal pg.14-16, Winter 2004, http://www.xilinx.com/publications/xcellonline/xcell_51/xc_pdf/xc_xcell51.pdf Marco Riccioli, Xilinx "Getting the most TCP/IP from your Embedded Processor", Embedded World 2005, http://www.treck.com/xilinx.pdf
