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Old 07-30-2008, 10:16 PM   #1
linushannon
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Registered: Jul 2008
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usb modem bottleneck?

I use an usb modem and it can work at 800-900kbps when downloading. But when I port it on an embedded board(mips CPU 240MHz, Linux 2.4.20), it can only be 520kbps.

The device driver I wrote is usb-serial.
I optimized the function of interface between usb and tty, but no improvement
In which layer would there be a bottleneck?
 
Old 08-05-2008, 11:41 AM   #2
jtshaw
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Please post your thread in only one forum. Posting a single thread in the most relevant forum will make it easier for members to help you and will keep the discussion in one place. This thread is being closed because it is a duplicate.

Continue this thread here.
 
  


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