ghci: 20 wakeups per second

From http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=438371 :

According to powertop on my laptop, ghci seems to wake up 20 times per
second looking for input when sitting at the command prompt.  This has
negative impact on battery life, as discussed on the powertop page.

I don't think the change in the HEAD to using timer_create rather than setitimer will have fixed this, but I can't currently run powertop so haven't been able to confirm that.

Trac metadata

Trac field	Value
Version	6.6.1
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system	Unknown
Architecture	Unknown

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