Level Extreme platform
Subscription
Corporate profile
Products & Services
Support
Legal
Français
Why VFP8 love AMD ?
Message
General information
Forum:
Visual FoxPro
Category:
Other
Miscellaneous
Thread ID:
00801738
Message ID:
00801748
Views:
11
>Hi
>
>
>T1=SECONDS()
>PRIVATE i
>FOR I=1 TO 20000000
>NEXT
>? SECONDS()-T1
>
>
>I run this program on my Compaq EVO P4 2,2Ghz and on a PC Athlon XP 2000+.
>
>Result:
>
>              | VFP6SP5  | VFP7SP1  | VFP8
>---------------------------------------------------
>P4 2.2GHZ     |  1.232 s |  1.191 s |  1.503 s
>---------------------------------------------------
>AMD XP 2000+  |          |  1.232 s |  1.171 s
>---------------------------------------------------
>
>
>VFP8 vs VFP7SP1 is 26% SLOWER on P4
>
>VFP8 vs VFP7SP1 is 5% FASTER on ATHLON XP
>
>Why ?
>
Fabio,

First, VFP8 is only about 3% slower on the P4, than VFP7, but it's about 22% faster on the AMD.

Secondly, a change in the VFP internals would cause this difference, especially in terms of memory manipulation, which VFP does a lot of. The original P4 cut the doubled the number of pipes and cut the on-chip caching in half. In reality, we should expect an AMD XP 2000+, which runs at 1.67 ghz to out perform a P4 2.2 because of this.
George

Ubi caritas et amor, deus ibi est
Previous
Next
Reply
Map
View

Click here to load this message in the networking platform