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Conference bulova::decw_jan-89_to_nov-90

Title:DECWINDOWS 26-JAN-89 to 29-NOV-90
Notice:See 1639.0 for VMS V5.3 kit; 2043.0 for 5.4 IFT kit
Moderator:STAR::VATNE
Created:Mon Oct 30 1989
Last Modified:Mon Dec 31 1990
Last Successful Update:Fri Jun 06 1997
Number of topics:3726
Total number of notes:19516

3666.0. "Performance problem since upgrade." by UTRTSC::CAHILL (No bags & baggage to slow me down) Thu Nov 15 1990 07:30

    Hi,
    
    I have a customer experiencing a performance problem with graphics
    output in a DECwindows application.
    
    The customer uses a package called CAMX,which performs molecular
    calculations and displays the ouput on a decterm,the application
    actually performs the calculations and opens a decterm and writes
    the output to the decterm.
    
    Since upgrading from 5.1-1 to 5.3-1 the customer has experienced a
    significant slowdown in the graphics display part of his application.
    The calculations performed by the application are performing as they
    did before the upgrade.The customer also has the option to use regis as
    his output medium,this works ok.He is only experiencing a problem with 
    decwindows graphics.
    
    He has a VAXstation 3100 model 30 with 8mb.I have looked thru stars etc
    but have not found any information relating to this problem.
    
    Does anyone know why DECwindows V2 should perform so differently from
    V1 in displaying complex graphics,or maybe it is simply a resource
    problem,newer version eats more resource....etc
    
    Anyone experienced a similar problem,any suggestions etc...
    
    Thanks,
    
    GC.
T.RTitleUserPersonal
Name		DateLines
3666.1More information neededSTAR::VATNEPeter Vatne, VMS DevelopmentThu Nov 15 1990 13:486
When talking about graphics performance, we also need to know the
type of graphics hardware in use.  Is this an MFB, GPX, or SPX system?

Also, if you run the application to a remote workstation running
DECwindows V1, do you still see the slowdown?  (This test would
distinguish between an Xlib/XToolkit problem and a server problem.)
3666.2UTRTSC::CAHILLNo bags & baggage to slow me downTue Nov 20 1990 06:485
    RE .1
    
    The system is not a special graphics system,also there is no 
    DECwindows V1 involved.
3666.3Duff information....UTRTSC::CAHILLNo bags & baggage to slow me downTue Nov 20 1990 10:5819
    re original note...
    
    Please ignore this note,I have spoken to another user at the site in
    question and the original user who logged the problem gave very bad
    information.
    
    For example..he didn't know they were using GKS,they were infact 
    experiencing a full performance problem etc....
    
    It looks like this is a normal tuning problem and not specifically
    related to graphics.
    
    Thanks for the response anyway...
    
    
    GC.
    
    (moderator you can delete this entry when the people involved have seen
    this reply).