<div dir="ltr"><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Feb 3, 2017 at 8:39 PM, Henrik Gramner <span dir="ltr"><<a href="mailto:henrik@gramner.com" target="_blank">henrik@gramner.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="HOEnZb"><div class="h5">On Fri, Feb 3, 2017 at 6:58 AM, Pradeep Ramachandran<br>
<<a href="mailto:pradeeprama@gmail.com">pradeeprama@gmail.com</a>> wrote:<br>
> Hi all,<br>
> I notice an ~50% performance difference between windows and linux platforms<br>
> on the same hardware (linux is faster) when I encode 4K videos with the most<br>
> presets with x264. When I poked further, we notice that the page-faults in<br>
> windows are 2-3 orders of magnitude more than on linux, and this is despite<br>
> using the VirtualPrefetch() function in x264.<br>
><br>
> Does anyone have any experience with this that they can share to improve<br>
> this?<br>
><br>
> Pradeep.<br>
<br>
</div></div>Is this with the OS file cache cleared beforehand on both systems?<br>
<br>
Just to make sure it's not reading from RAM on one system and from<br>
disk on the other.<br></blockquote><div><br></div><div>I'm copying my files to a RAM disk that I create using a tool like lmdisk and reading files from there; shouldn't that be sufficient?</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
Henrik<br>
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