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Mail Archives: cygwin-apps/2002/04/27/01:10:53

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From: "Gareth Pearce" <tilps AT hotmail DOT com>
To: Cygwin-Apps AT cygwin DOT com
Subject: RE: ITP: netpbm
Date: Sat, 27 Apr 2002 05:10:42 +0000
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Message-ID: <F190XF2aZcdjaS36Il000001262@hotmail.com>
X-OriginalArrivalTime: 27 Apr 2002 05:10:43.0596 (UTC) FILETIME=[E1C27CC0:01C1EDA9]

>
>
>
> > -----Original Message-----
> > From: Earnie Boyd [mailto:earnie_boyd AT yahoo DOT com]
> > Sent: Saturday, April 27, 2002 6:03 AM
>
> > As for the # of executables in the /bin directory, isn't
> > there a limit to the number of files and/or directory entries
> > in any one directory on win32?
>
>As has already been said, not past the root. However directory search
>time is O(N) on FAT, vs (IIRC) O(logN) on NTFS. So directories with many
>files leads to signficcantly longer lookup times - and thas when the
>filename is known!.

My experience - on ntfs ... i have a directory of approx 10thousand 5 minute 
log files of me playing telnet based muds ... *snicker*
i can grep them all (each about 10-20k) in a few minutes ... (9 grep 
commands because command line expansion limitations :P) - really preformance 
drop is not that noticible.  Except in one area.
cd'ing to the directory in the first place - can take a minute or more, 
subsequent cd's are fast, but it seems like its caching all the filenames in 
the directory for faster access.

Anyway ... theres a 'pseudo-data-point'

Regards,
Gareth




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