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Date: Fri, 30 Nov 2001 12:00:05 -0500
To: arnaud AT apiic DOT info, cygwin AT cygwin DOT com
From: "Larry Hall (RFK Partners, Inc)" <lhall AT rfk DOT com>
Subject: Re: Strange performance of Bash depending of current directory
In-Reply-To: <3C0765D3.8070708@apiic.info>
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At 05:56 AM 11/30/2001, apiic wrote:
>Hi,
>
>At first, thank you for CYGWIN environment which is so useful, specially for me to settle shells both on NT stations et UNIX stations. I ask about a strange problem about Bash performances
>of scripts depending of the type of NT local directory.
>
>I maintain a bash profile running on NT4 station with CYGWIN and on IRIX station. This profile is stored on UNIX (IRIX station with Samba) server.
>
>Some users complaint about low performances of this profile running on their NT4 station.
>I found that all users complaining got their home directory on UNIX station (net use with Samba).
>The others got their home directory on NT station.
>
>So I wrote a little script and tested it, first in local directory and second in Samba directory. Here is the result :
>
>1) Running script in local directory (c:/users/<username>)    2 seconds
>2) Running script in share directory (net use Samba)          4 seconds
>
>Script :
>
>#!/bin/bash
>
>for ligne in $(mount | grep system | tr -s [:space:] | sed 's/ /,/g' )
>do
>   path=$(echo $ligne | sed 's/,/ /g' | cut -f1 -d " ")
>   point=$(echo $ligne | sed 's/,/ /g' | cut -f3 -d " ")
>   echo $point monte sur $path
>done
>
>It appears that performances of scripts depend of the current directory in which they are run. I made several tests and it seems that variable HOME
>and variable PATH have no relation with this behaviour.
>
>I read FAQ and Mailing list archive without any answer about this problem
>Thank you for helping


The overhead of network access is not insignificant with Cygwin.  Putting
network directories in the path can have a significant performance impact
too.



Larry Hall                              lhall AT rfk DOT com
RFK Partners, Inc.                      http://www.rfk.com
838 Washington Street                   (508) 893-9779 - RFK Office
Holliston, MA 01746                     (508) 893-9889 - FAX


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