Path: csiph.com!weretis.net!feeder8.news.weretis.net!reader5.news.weretis.net!news.solani.org!.POSTED!not-for-mail From: Richmond Newsgroups: alt.comp.software.firefox Subject: Re: 'RDD Process' consuming 100%+ CPU Date: Fri, 08 Aug 2025 16:07:36 +0100 Organization: Frantic Message-ID: <86cy956edj.fsf@example.com> References: <86h5yigjj6.fsf@example.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: solani.org; logging-data="3663827"; mail-complaints-to="abuse@news.solani.org" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.2 (gnu/linux) Cancel-Lock: sha1:mCPV5OVF5FxCyVWtk6RAIeSlg6Y= sha1:BwSaO4xfzH/e4p1ThmBu57vRA2M= X-User-ID: eJwNy8EBwCAIA8CVrIFExgEq+4/Q3v8cfNgyOs3HZ5XnKchB4i3MmrraqUmcYKRuY7diYtl/Pxz4EN4= Xref: csiph.com alt.comp.software.firefox:14420 VanguardLH writes: > Richmond wrote: > >> When I visit this site: >> >> https://openai.com/gpt-5/ >> >> a video starts playing, and the process 'RDD Process' appears in 'top' >> (linux command line) and the usage goes up from 90% to over 100%. Also, >> when I click the try gpt-5, it does not launch gpt-5, but instead stays >> on 4. I don't see these problems with Brave. >> >> According to Chat-gpt this process is a sandbox video playing >> process. But when I pause the video it still uses over 100% cpu. >> >> I set media.autoplay.blocking_policy = 2 but the video still plays >> without asking. >> >> The only way I know to check which version of chat-gpt is in use is to >> ask it. Version 5 confirms itself. >> >> Debian GNU/Linux 12 >> Debian 6.1.140-1 (2025-05-22) x86_64 GNU/Linux >> Mozilla Firefox 128.13.0esr > > From a search on "rdd process", I found: > > https://askubuntu.com/questions/1483112/high-cpu-usage-by-a-firefox-subprocess-called-rdd-process > > Go into about:config and set media.rdd = false. Without the media > getting funneled through the sandboxed RDD process, if the video process > crashes then so does the web browser. > > https://www.reddit.com/r/linux/comments/xcikym/tutorial_how_to_enable_hardware_video/ > > That mentions VA-API, and checking if hardware (GPU) acceleration is > enabled in about:config, but also mentions nVidia GPU's don't have > VA-API. You didn't mention your video card. RDD uses the GPU for > hardware acceleration. > > https://en.wikipedia.org/wiki/Video_Acceleration_API > > RDD uses the GPU for hardware acceleration. I found an article that > mentions how to ensure it is enabled in FF at: > > https://discourse.ubuntu.com/t/enabling-accelerated-video-decoding-in-firefox-on-ubuntu-21-04/22081 Thanks, that (about:config webrender) has reduced the processing. What's puzzling though is in Firefox settings it has: [x] Use recommended performance settings Learn more These settings are tailored to your computer’s hardware and operating system. And when I uncheck the box, it shows hardware acceleration enabled. So I wonder if it is enabled when I don't uncheck the box, a bit like wondering if the light is on in the fridge when the door is shut. My GPU is: 00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 0b)