On Thu, Jul 08, 2010 at 11:46:51AM -0500, Mark Schank wrote:
> Not sure if it applies here, but I use a utility called "setserial" to  
> set the "low_latency" flag on the port. I also build my kernel with a  
> 1000hz tick rate. It seems to reduce some of the latency, but I have  
> never seen it as high as what you are seeing.

I wonder if the port is using the irq or polling?  I seem to recall
seeing really bad serial performance when the irq wasn't setup right once.

-- 
Len Sorensen
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