Number:        A2TH082490U432 
Subject:       Access Server Performance Problem 
Date:          October 16, 1990
- - - - - - - - - - - - - - - - - - - - - - - - -

PROBLEM:       A customer reported extremely slow performance on his
               NetWare Access Server when running his customized order
               entry software.  The symptom was that screen information on
               his remote PC using the Access Server was three to four
               lines behind his keyboard input.  The NAS configuration was
               as follows: 
  
               Access Server  Acer 1100 386/20 
               Modems         Easy Statplex v.32 at 9600 baud 
               Ram on NAS     4MB 
               NAS version    1.01 with PTF 209 patches applied 
               LAN Adapter    NE2000 
               File Server    Advanced 2.15c, NE2000, 9MB RAM 
  
SOLUTION:      The solution to his problem consisted of two parts.  In the
               NAS software v1.01, some changes have been made to the
               DVSETUP.DV file that have resulted in a slowing of the
               screen refresh time at the remote workstation.  By using the
               DVSETUP.DV from v1.0, we were able to significantly increase
               the screen response time at the remote site. 
  
               Part two of the solution was to modify the customized
               software he was using.  Apparently there was a lot of
               overhead in this software which, when run on a typical LAN
               workstation, did not result in noticeable degradation in
               the processing speed.  However, with four users sharing the
               processor on the NAS workstation, this overhead resulted in
               a significant decrease in performance.  The dealer who
               called in this problem wrote the software, so it was an easy
               matter for him to disable some of the unused functions of
               the software.  The combination of these two adjustments has
               improved the performance on the NAS to the customer's
               satisfaction.   
 
               (X)    This information was verified verbally.