[windows2000] Re: large number of files in folder, slow lan acces s

From: James.E.Borchart@xxxxxxxxxxx
To: windows2000@xxxxxxxxxxxxx
Date: Tue, 8 Oct 2002 10:55:46 -0500

Richard,

I've seen this particular problem on a variety of operating systems, from
VMS to DOS to NetWare to Win2K.    I've often worked in manufacturing and a
lot of manufacturing systems have this.

The problem originates in how efficient the hashing algorithm is for the
directory:  It is optimized to quickly show a small number of files.  I am
pretty sure it won't be fast even on the local system.  My NT boxes with
>30K file count in one directory can take over 20 minutes just to do a CMD
DIR from the server console.  Scary to watch because it just stops for a
few seconds every once in a while.  Try this on yours and you will see.

Windows explorer is highly optimized in a way that makes large numbers of
files like this work very poorly.  Aaron's ideas, below, can help some.
Redesigning the storage mechanism is the only permanent solution.  Using
CMD batch commands to manipulate the files is the only practical method.




                                                                                
                                               
                    Aaron Dokey                                                 
                                               
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                    windows2000-bounce@fre        Subject:     [windows2000] 
Re: large number of files in folder, slow lan     
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Richard,

I once had a problem similar to this, but in my situation it would bring
the
file server to it's knees.  We had a large number of files, and when a
client would run a script against those files it would max out the CPU on
the file server and make it unresponsive to network requests.  There was a
MS Q article with some registry tweaks that I used, but I cannot remember
if
this fully solved the problem or not.  A couple of weeks later I moved all
the file/print services to a Win2k cluster, which was planned prior to this
event.

It's not much help, but search the MS knowledge base there is something out
there.

-Aaron

-----------------------
Aaron Dokey - MIS
Reid Tool Supply
2265 Black Creek Rd.
Muskegon, MI   49444
(231) 777-3951
(231) 767-3772 (Direct)
-----------------------

-----Original Message-----
From: Richard Hopper [mailto:Richard.Hopper@xxxxxxxxxxxxx]
Sent: Monday, October 07, 2002 10:51 AM
To: 'windows2000@xxxxxxxxxxxxx'
Subject: [windows2000] large number of files in folder, slow lan access



Hi,
     I have a NT4 server which has a few folders with a fairly large
number of files. 4000, or 12000 say.  Most of the files are fairly small <
16K.   Browsing through these folders is painfully slow.  The server is not
heavily loaded by any means.  Is there anything I can do to improve this.
The server is a 333Mhz PII with 256meg of ram. with over 180 megs of ram
available.


Cheers


Richard




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[windows2000] Re: large number of files in folder, slow lan acces s

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