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From:	"BiDuS" <bidus AT free DOT fr>
To:	<cygwin AT cygwin DOT com>
Subject:	RE: Cygwin is SLOW
Date:	Tue, 16 Jul 2002 18:03:09 +0200
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I've tried both slow and fast perl scripts on my machine (AMD XP1700, W2K)

If  test.file is on a local directory

$ perl slowchm.pl
113.4 chmods per sec
$ perl fastchm.pl
2923.6 chmods per sec

if test.file is on a mounted directory

$ perl slowchm.pl
51.9 chmods per sec
$ perl fastchm.pl
143 chmods per sec

Could anyone explain the performance ratio for both scripts ???

btw, on a "slow" linux p3-866
test.file being on a remote directory
$ perl slowchm.pl
187.8 chmods per sec
$ perl fastchm.pl
3096.8 chmods per sec

test.file being on a local directory
$ perl slowchm.pl
181.7 chmods per sec
$ perl fastchm.pl
263232.5 chmods per sec   (arf!)

I got a wider gap for small c program opening and closing about 650 files
It takes 0.750 s for local files and about 2 s for distant files
On the linux machine, it's just 0.1 s for distant files...

Is the _open() routine guilty ?
Is it linked to the unix AND dos path compatibility ?
Anyone as a hint to speed this up ?


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