Subj : CPU/Thread performance on multiprocessor Win 2003
To   : borland.public.cpp.borlandcpp
From : Björn Lantz
Date : Fri Nov 05 2004 06:13 pm

Hello world of experts,

I have a BC 5.02 application that works like a http server and launches a
lot of threads per call. It also makes a lot of malloc/free per thread.

The app works fine on a singe processor machine, but on a multiprocessor (4)
machine running Windows Server 2003 (1G ram) the performance is worse than
the singe processor machine. Also the performance monitor indicates quite
hight load per cpu, and a total nearly 90%. During this the machine is still
responsive though, which is not normally the case if an application truly
takes 90% of cpu load.

Anyone familiar with the problems that may be caused by the 4-processor
machine? Could it be that mallocs are slower on multiprocessor machines, or
is it the Borland C5.02 runtime libraries that are getting outdated for
those new OS:es ?

I have of course linked with the multithread libraries.

Suggestions anyone?

.