#7418: Writing to stderr is 7x slower than writing to stdout
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Reporter: SimonHengel | Owner:
Type: bug | Status: new
Priority: normal | Component: Runtime System
Version: 7.6.1 | Keywords:
Os: Linux | Architecture: x86_64 (amd64)
Failure: Runtime performance bug | Blockedby:
Blocking: | Related:
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Comment(by parcs):
By default `stdout` is buffered and `stderr` is not. If you do
`hSetBuffering stderr LineBuffering` in the second program then it's just
as fast as the first program.
QuickCheck should probably be patched to enable buffering on `stderr`.
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7418#comment:1>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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