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On Sun, Feb 08, 2004 at 02:58:17PM +0800, Francis, Chong Chan Fai wrote: > > Probably a problem with pcmcia. > > > I've used a usb 2.0 pci card, but the cpu usage is so high that it's just > as > > fast as the same card using the uhci-hcd driver -- and uhci uses *much* > > less cpu. > > Thank you for your reply. > > I don't have the performance problem with USB2.0, it read a file lightning > fast (compare with USB 1.0), but just hang shortly after a few files. It was a pII 300... not a dino, but getting old. > > I using USB 1.0 as a work around, but my disk is 120G and the speed is > terrible. > > Because the command " lspci " show the PCMCIA bus correctly, I didn't > thought it could be a problem. If it is the case, what can I do? Can you run "dd < /dev/sda > /dev/null" on the usb drive without a hang/crash? Turn on the nmi_watchdog. There is documentation in the kernel source tree, and on the web... - 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/ | ||||||||||||
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