On Thu, Jan 14, 2010 at 2:30 PM, Peter Simons <sim...@cryp.to> wrote:

>
> I just updated to GHC 6.12.1, and I noticed a significant drop in I/O
> performance that I can't explain.


This is probably brought about by the new Unicode I/O support in 6.12. Your
file isn't open in binary mode, so it's probably getting translated from
something like UTF-8 before it reaches you. Might want to compare the two.

I'm a little surprised by the magnitude of the difference; I might have
expected it to be 33%, not 400%.
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