[Haskell-cafe] Linux ghci vs Windows ghci

Bulat Ziganshin bulat.ziganshin at gmail.com
Wed Feb 24 04:25:27 EST 2010

Hello Brandon,

Wednesday, February 24, 2010, 8:08:41 AM, you wrote:

>> I feel that ghci code executing speed in guest os is 1.5~2x faster
>> than host os

> My guess is that GHC (and the GHC RTS) on win32 is using a POSIX  
> emulation layer supplied by mingw32 for all system calls, introducing
> extra overhead.

1. yes, mingw is using POSIX emulation layer for file operations, but
i don't believe that it provides any serious overhead - even for i/o

2. this example was purely computational, no OS calls involved

Best regards,
 Bulat                            mailto:Bulat.Ziganshin at gmail.com

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