[DUG] XP, hyperthreading and speed

[Rohit Gupta]

I know I wont be believed, I can scarcely believe it myself.  Under some 
circumstances the display update for delphi apps is very slow.  the 
difference in speed we are talking about is 3 seconds and 23 seconds.

When it is slow, all delphi apps are slow.  When it is fast, all delphi 
apps are fast.

The only correlation I have found is that when the screen update code is 
running (painting 300  editboxes) if the load is balanced between the 
two cpus, the apps run slow.  If the load is on one side or the other, 
then the apps are fast.  While even one Delphi app is in memory, the 
speed remains consistent.  To switch, one must close all Delphi apps and 
wait a few seconds before launching them again.

Is someone brave enough to postulate a theory ?

-- 
*Rohit Gupta*
* B.E. Elec.   M.E.   Mem IEEE    Associate IEE*
*Technical Manager*
*Computer Fanatics Limited*
** 
*Tel*     +64 9 4892280
*Fax*    +64 9 4892290
*Email  *rohit at cfl.co.nz <mailto:rohit at cfl.co.nz>**
*Web    *www.cfl.co.nz <http://www.cfl.co.nz/>
 
------------------------------------------------------------------------
This email and any attachments contain information, which is 
confidential and may be subject to legal privilege and copyright. If you 
are not the intended recipient, you must not use, distribute or copy 
this email or attachments. If you have received this in error, please 
notify us immediately by return email and then delete this email and any 
attachments.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.adventureeducation.co.nz/pipermail/delphi/attachments/20071105/c7d03e12/attachment.html