Messages in this thread | | | Date | Wed, 16 Aug 2006 08:35:05 -0600 | From | Robert Hancock <> | Subject | Re: How to avoid serial port buffer overruns? |
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Raphael Hertzog wrote: > (Please CC me when replying) > > Hello, > > While using Linux on low-end (semi-embedded) hardware (386 SX 40Mhz, 8Mb > RAM), I discovered that Linux on that machine would suffer from serial > port buffer overruns quite easily if I use a baudrate high enough (I start > loosing bytes at >19200 bauds and I would like to make it reliable up to > 115 kbauds). I check if overruns are happening with > /proc/tty/driver/serial ("oe" field).
What kind of serial port are you using? If it's an unbuffered 8250-type port, it will NEVER be reliable at higher baud rates. You want a 16550 (or better) port.
-- Robert Hancock Saskatoon, SK, Canada To email, remove "nospam" from hancockr@nospamshaw.ca Home Page: http://www.roberthancock.com/
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