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Re: Optimizing away "ReadFile" calls when Make calls stat()

To: jik-cygwin at curl dot com
Subject: Re: Optimizing away "ReadFile" calls when Make calls stat()
From: DJ Delorie <dj at delorie dot com>
Date: Tue, 13 Feb 2001 15:25:28 -0500
CC: cygwin at cygwin dot com
References: <20010213183634.1435.qmail@lizard.curl.com> <3A89867C.395FC4E3@yahoo.com> <20010213191450.15506.qmail@lizard.curl.com> <3A898FA0.6895B5CA@yahoo.com> <20010213195439.17755.qmail@lizard.curl.com>


> if they speed up Cygwin significantly, why aren't the people who
> precompile Cygwin for download using those switches by default?

Because using those switches when you shouldn't results in incorrect
behavior.  The defaults are *always* right, at the expense of speed.

> Win32 is slower, but not THAT much slower.

Actually, it is.  I did some benchmarks using the native Win32 API
directly, and Linux is way faster.

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Follow-Ups:
- Re: Optimizing away "ReadFile" calls when Make calls stat()
  - From: Larry Hall (RFK Partners, Inc)

References:
- Optimizing away "ReadFile" calls when Make calls stat()
  - From: Jonathan Kamens
- Re: Optimizing away "ReadFile" calls when Make calls stat()
  - From: Earnie Boyd
- Re: Optimizing away "ReadFile" calls when Make calls stat()
  - From: jik-cygwin
- Re: Optimizing away "ReadFile" calls when Make calls stat()
  - From: Earnie Boyd
- Re: Optimizing away "ReadFile" calls when Make calls stat()
  - From: jik-cygwin

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