IO question (hGetLine)

[Gerd M]

I've written a Haskell program that reads continuously from a character 
device that provides data line by line and blocks the reader when there's no 
data available yet.
At the moment performance isn't a real issue so I thought I would give 
hGetLine a try. Unfortunately the program is consuming a lot of cpu power 
when the input is blocked which is definitely an issue of hGetLine because 
this wasn't the case when I tested it with
# cat /dev/chardev
which waits silently until data is available.
Any suggestions?

Thanks in advance!
Gerd

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