Messages in this thread | | | From | jbradford@dial ... | Subject | Re: 2.5.x and 8250 UART problems | Date | Sat, 5 Oct 2002 16:18:39 +0100 (BST) |
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> > I've noticed that 8250 UART based serial port performance is poorer in > > 2.5.x than 2.4.x and 2.2.x, on a couple of my machines. > > > > The 486 SX-20 with 4 MB RAM, running 2.2.21 reliably achieves about 650 > > BPS download from another machine, with the port runnnig at 9600 bps. > > With 2.5.40, many characters are lost at 9600, making, e.g. a ZModem > > transfer retry for almost every block. > > Have you tried 'hdparm -u'?
Hmmm, I can do, but I thought it was a Bad Thing (tm) for ISA based controllers? I could be wrong...
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