[Mplayer-users] Question: Fastmemcpy and 3dnow
arpi at thot.banki.hu
Fri Apr 20 03:15:24 CEST 2001
> > Did you use a loop and devide by 100? I guess you shouldn't!
> > The array of 100000 Bytes fits (at least) into L2-Cache, so you measure
> > L2-speed starting with the 2nd iteration. But video data destination will
> > probably not be L2, so the (higher) number you get in a first run would be a
> > better value for comparisson. Am I right?
> Actually, when I put it in a tight loop, I was getting spikes of MUCH
> higher times here and there. So, after that I inserted a "sleep 1"
> in the script after each.
I'm thinking about a vo benchmark option into mplayer.
It should display for example 100 usual size (for example 720x576,
or the size specified by -x -y) frames as fast as possible, and
measure the time required for this.
A'rpi / Astral & ESP-team
mailto:arpi at thot.banki.hu
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