<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - intel-virtual-output: bad performance" href="https://bugs.freedesktop.org/show_bug.cgi?id=96820#c1">Comment # 1</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - intel-virtual-output: bad performance" href="https://bugs.freedesktop.org/show_bug.cgi?id=96820">bug 96820</a> from <a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> Chris Wilson</a> <pre>intel-virtual-output -v will give you a lot of output about what it is doing, including the copying from one screen to another and importantly the method. Ideally we could share a buffer between Intel and Nvidia so that all copies are performed by the GPU. On the Intel side, this is easy to setup (and should already be) but I've not spent much time trying to find a way to do zero-copy transfer to nvidia. Start by confirming it is the copy that is rate-limiting, that should be clear from the log and if you feel confident have a look through the code and see what improvements you can make. (Or offer a few pointers.)</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>