Comments on: More fun with Linux and serial ports on slow hardware http://raphaelhertzog.com/2007/01/23/more-fun-with-linux-and-serial-ports-on-slow-hardware/ Insider infos, master your Debian/Ubuntu distribution Mon, 06 Sep 2010 09:43:11 +0000 hourly 1 http://wordpress.org/?v=3.0 By: Dave http://raphaelhertzog.com/2007/01/23/more-fun-with-linux-and-serial-ports-on-slow-hardware/#comment-733 Dave Fri, 26 Jun 2009 21:41:30 +0000 http://www.ouaza.com/wordpress/2007/01/23/more-fun-with-linux-and-serial-ports-on-slow-hardware/#comment-733 Does anyone know why Linux serial performance stinks? I can run the same system on WIN XP wide open while taxing the LAN and WiFI hard and not one dropped byte on serial at 115,200. Linux drops bytes regardless. I have tried for days, I am using 128 byte FIFO,s the interrupt rate is in the milliseconds, I mean, Linux can't handle millisecond interrupt rates? This is absurd and silly. Do I have to write my own interrupt handler for Linux Serial ports? Does anyone know why Linux serial performance stinks? I can run the same system on WIN XP wide open while taxing the LAN and WiFI hard and not one dropped byte on serial at 115,200.
Linux drops bytes regardless.

I have tried for days, I am using 128 byte FIFO,s the interrupt rate is in the milliseconds, I mean, Linux can’t handle millisecond interrupt rates?

This is absurd and silly. Do I have to write my own interrupt handler for Linux Serial ports?

]]> By: Max http://raphaelhertzog.com/2007/01/23/more-fun-with-linux-and-serial-ports-on-slow-hardware/#comment-732 Max Sat, 17 Mar 2007 09:57:16 +0000 http://www.ouaza.com/wordpress/2007/01/23/more-fun-with-linux-and-serial-ports-on-slow-hardware/#comment-732 Give a try to the irqtune tool from hwtools package by tuning the serial interrupt priorities to higher values. Give a try to the irqtune tool from hwtools package by tuning the serial interrupt priorities to higher values.

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