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Message-ID: <002b01c22d5f$5412daa0$a50aa8c0@pcse5>
From: "BiDuS" <bidus AT free DOT fr>
To: <cygwin AT cygwin DOT com>
References: <1026851730 DOT 8871 DOT ezmlm AT cygwin DOT com>
Subject: RE: Cygwin is SLOW
Date: Wed, 17 Jul 2002 08:58:15 +0200
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Ok, maybe my English was bad enough to confuse you about my question.
I meant "why is there a so big difference between executing one script (say
the fast one) on a distant file and on a local file ?",
the path to chmod.exe being the same for both execution (am I wrong ?).
I quoted my results and drop other stuff.

>> I've tried both slow and fast perl scripts on my machine (AMD XP1700,
W2K)
>>
>> If  test.file is on a local directory
>>
>> $ perl fastchm.pl
>> 2923.6 chmods per sec
>>
>> if test.file is on a mounted directory (through a symlink)
>>
>> $ perl fastchm.pl
>> 143 chmods per sec
>>
>> Could anyone explain the performance ratio for both scripts ???

[SNIP]

>> 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 ?

I noticed you mentionned the influence of the PATH length upon the global
performance
and I keep invastigating... (path convertion routine)



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