Date: Wed, 19 Feb 2025 23:22:00 -0500 From: Jung-uk Kim <jkim@FreeBSD.org> To: Mohammad Noureldin <mohammad@thelightbird.com>, Freebsd current <freebsd-current@freebsd.org> Subject: Re: Very poor -CURRENT boot performance on AMD Message-ID: <3c7dab54-ac92-4a65-8517-e1636361e33d@FreeBSD.org> In-Reply-To: <CAAQ96DxEOHexefyiFStHUYt6rnmGsGj%2BFvZhGyXqooaGyNEteg@mail.gmail.com> References: <CAAQ96DxEOHexefyiFStHUYt6rnmGsGj%2BFvZhGyXqooaGyNEteg@mail.gmail.com>
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On 25. 2. 19., Mohammad Noureldin wrote: > Hi, > > I've installed -CURRENT using snapshot "FreeBSD-15.0-CURRENT- > amd64-20250213-6156da866e7d-275409" on an HP EliteBook 845 G10 with AMD > Ryzen 5 7540U. > > Both when booting from the install media and when booting from disk > after installation I get a very poor boot performance up until the > FreeBSD Boot Options Menu. Right after it is all OK. > > I've recorded what happens during the boot from the installation media > in [1]. > > Does this ring any bells ? Is it a bug that I should report in a PR > (Problem Report) ? > > [1] https://drive.google.com/file/d/1s1a9qTwh-8gWOp0Lyta_Wc0RyUAkXTND/ > view?usp=sharing <https://drive.google.com/file/ > d/1s1a9qTwh-8gWOp0Lyta_Wc0RyUAkXTND/view?usp=sharing> This happens because UEFI framebuffer access from boot loader is very slow. Once the kernel is loaded and booted, everything is okay because we properly set memory attribute. It's a long standing bug and there's PR254381. https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=254381 Jung-uk Kim
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