[x264-devel] Performance difference between windows and linux

[Henrik Gramner]

On Fri, Feb 3, 2017 at 6:58 AM, Pradeep Ramachandran
<pradeeprama at gmail.com> wrote:
> Hi all,
> I notice an ~50% performance difference between windows and linux platforms
> on the same hardware (linux is faster) when I encode 4K videos with the most
> presets with x264. When I poked further, we notice that the page-faults in
> windows are 2-3 orders of magnitude more than on linux, and this is despite
> using the VirtualPrefetch() function in x264.
>
> Does anyone have any experience with this that they can share to improve
> this?
>
> Pradeep.

Is this with the OS file cache cleared beforehand on both systems?

Just to make sure it's not reading from RAM on one system and from
disk on the other.

Henrik