On Fri, 16 Nov 2007 14:34:03 +0300 Sergei Gorelkin <[EMAIL PROTECTED]> wrote:
> Graeme Geldenhuys wrote: > > > No idea?? They seem to fluctuate after each run, but the overall > > result (which tests are faster) are always constant. Have a look at > > the code, if there is a better way of testing this. The code is > > pretty simple. Just loop and create 10,000 objects in each loop. > > > Your tests do not free the refcounted objects, but free the > non-refcounted ones. This probably explains why 'standard > refcounting' test is faster than 'standard non-refcounting'. > Still cannot say anything about custom BaseObject. Maybe you could > figure out the showstopper by using callgrind. I tested your tests and the results were completely random. - They need so much memory that the OS page handling interferes. - You used the slow 'Now' function. Decrease the CTestRunTime to 1 and let the loops run 1000000 and you will get more reliable results: $ ./performancetest 13 iterations in 1 seconds (no reference counting) 11 iterations in 1 seconds (reference counting) 9 iterations in 1 seconds (no reference counting with MyBaseObject) 8 iterations in 1 seconds (reference counting with MyBaseObject) $ ./performancetest 13 iterations in 1 seconds (no reference counting) 11 iterations in 1 seconds (reference counting) 9 iterations in 1 seconds (no reference counting with MyBaseObject) 7 iterations in 1 seconds (reference counting with MyBaseObject) Mattias _______________________________________________ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
