On Wednesday 11 June 2003 09:19 pm, Eric Nelson wrote: > > Is 600KB/s during isochronous xfers? Using a PCI based USB host the best > > I've > > > seen for bulk xfers with the Dell Axim PDA is 200KB/sec. > > No. ATL transfers via an ethernet device from a Linux PC, of course :).
Have you tested with multiple USB devices? I'm curious as to how it scales. > This is roughly the same performance we see using a laptop performing > the same transfer. I believe that all of the testing used curl to read > files over http. > > The guy who worked on the isp code is on vacation for the next > couple of weeks, but I'll ask him about the details. > > I recall his mentioning that the ISP hardware had issues with double > -buffering, and it took him a while to get reasonable performance. > > What kind of USB hardware does the Dell Axim have? Yes the Dell Axim is a PXA255 device. I'm using it (must be a PocketPC slave) for testing the host. I'm attempting to connect the ISP1160 to an Intel IXP420 expansion bus. Right now I have 3 different drivers. One detects the root hub and attempts to assign an ID to the device but then fails. Another (obtained from Philips) kinda works in an ISA slot but occasionally hangs the kernel and has poor performance. I'm porting it to the IXP now just to see if a device will connect. The third is the boundary devices patch. I haven't ported this one yet due to the use of DMA. Kyle. ------------------------------------------------------- This SF.NET email is sponsored by: eBay Great deals on office technology -- on eBay now! Click here: http://adfarm.mediaplex.com/ad/ck/711-11697-6916-5 _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
