From mboxrd@z Thu Jan 1 00:00:00 1970 From: Egor Nogdor Date: Mon, 08 Mar 2010 00:16:20 +0000 Subject: Beginner question about fbdev performance Message-Id: <85f9cb1d1003071616w52392c0dq828f99b20c597ef3@mail.gmail.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-fbdev@vger.kernel.org Hi, Why is it that the unaccelerated framebuffer device is slower than e.g. an accelerated X session when blitting data from main memory? Shouldn't both cases involve simply copying data from RAM to VRAM? What is the bottleneck in the former case? Thanks, Anders