Path: news.eternal-september.org!eternal-september.org!.POSTED!not-for-mail From: Jesper Newsgroups: comp.sys.raspberry-pi Subject: Re: Video speed at a crawl Date: Mon, 12 May 2025 11:41:36 +0200 Organization: A noiseless patient Spider Lines: 78 Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Mon, 12 May 2025 11:41:37 +0200 (CEST) Injection-Info: dont-email.me; posting-host="5dd7f9940a64ef6148af2e37ded76809"; logging-data="1089703"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/jEugC7Vc5G2qFHh3MgXhg" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:3hXgvPtinkFVxfqjL1ZV/+bAL+k= Content-Language: da, en-GB In-Reply-To: On 11.05.2025 22:18, druck wrote: > On 11/05/2025 10:41, Jesper wrote: >> For a week or two showing video on my Raspi 5 with NVME is impossible. >> The framerate is now something like 2-3 seconds per frame. >> Before the axe fell it went smooth, Youtube video, TV, videos in news >> sites, no problem at all. The problem exists no matter if the >> connection is via wifi or ethernet. >> I have tested up- and download speed with Speeedtest.net. The results >> are 50 to 52 Mb/s, and the connection is specified for 50/50 up and down. First a new observation: Showing a mp4-video captured with my android phone runs fine. > > I would look at what is running on the Pi. Use htop to see what > processes are using CPU. It will also show total memory used and if G> there is any swap usage - which will kill the machines performance. With Thunderbird, File Manager and a Terminal running, HTOP shows Mem 960M/7.87G, Swp 0K/200M. - After starting the mp4-video HTOP shows Mem 1.14G/7.87G, Swp 0k/200M. - After stopping the mp4 video and starting Firefox HTOP shows Mem 1.39G/7.87G Swp 0K∕200M. The 4 lines in HTOP above Mem and Swp shows low numbers, like 0.7% to 2.0%. - After also starting a video in Firefox HTOP shows 1.74G/7.87G Swp 0K/200M. The 4 lines in HTOP above Mem and Swp shows 20% to 45%, but goes down to numbers below 20 while the video is shown as a few frames with like 3 seconds interval. FREE in Terminal Shows this: raspberrypi@raspberrypi:~ $ free total used free shared buff/cache available Mem: 8253120 2801216 2426464 603024 3843104 5451904 Swap: 204784 0 204784 Testing with Chromium browser gives the same result as with Firefox > > > Per now this raspi is mostly used for checking news, and there is no > > problem with that, except for embedded videos that run at 2-3 seconds > > per frame. Pages load at normal speed. > > Browsing is a memory hog. Have you tried immediately after rebooting and > before running any browser? What does the output of 'free' show? The problem also exists after a restart. Please see above for the output of free. > >> I have used some test from Tom's hardware, using vcgencmd, as shown at >> the bottom. >> https://www.tomshardware.com/how-to/raspberry-pi-benchmark-vcgencmd > > I suspect it isn't anything hardware or power related as you would get > some outright failures rather just slowness. > >> There has been several updates coming in to the Raspi lately. I check >> what is in the updates but often have no clue to what is does, and >> just let it install. But if an update causes havoc like this, other >> people would have been hit, and it probably would have been mentioned >> in this newsgroup. > > It's always a good idea to do a backup before a major update, put that > on an SD card and see if the problem is with the older software. > > It maybe something has been reconfigured such as going from Xorg to > Wayland display systems which your video playing app doesn't work > optimally with. > > ---druck > Thank you for your reply. HTOP sems to be a great tool, but it will take some time to be familliar with it. A strange thing is I saw 45 lines with /usr/lib/thunderbird/thunderbird listed with 5.7 % for MEM%. That sums up to 250% :-) So I do not understand HTOP at all :-) Best regards -- Jesper