Date: Fri, 7 Nov 2025 10:42:24 -0500 From: Paul Mather <paul@gromit.dlib.vt.edu> To: bob prohaska <fbsd@www.zefox.net> Cc: Mark Millard <marklmi@yahoo.com>, Ronald Klop <ronald-lists@klop.ws>, freebsd-current@freebsd.org, freebsd-arm@freebsd.org Subject: Re: Arm v7 RPi2 -current unresponsive to debugger escape during buildworld Message-ID: <8939ABFB-B315-4DFE-8CD9-296B8A117053@gromit.dlib.vt.edu> In-Reply-To: <aQ1X7WDt3-qPy1Bx@www.zefox.net> References: <aQyrBArxXq-JSaqu@www.zefox.net> <475995705.6919.1762440301455@localhost> <aQzPBMjvuCoY-kY-@www.zefox.net> <05ADBC62-E111-42F9-ACF2-3A92F2781870@yahoo.com> <aQ1X7WDt3-qPy1Bx@www.zefox.net>
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On Nov 6, 2025, at 9:22 pm, bob prohaska <fbsd@www.zefox.net> wrote: > On Thu, Nov 06, 2025 at 10:00:19AM -0800, Mark Millard wrote: >> On Nov 6, 2025, at 08:38, bob prohaska <fbsd@www.zefox.net> wrote: >> >>> On Thu, Nov 06, 2025 at 03:45:01PM +0100, Ronald Klop wrote: >>>> Hi, >>>> >>>> To me it sounds like your machine is overwhelmed by swapping. >>>> >>>> Try -j1 buildworld. > Maybe a -j1 buildworld could be at least somewhat informative. > Lately none of my Pi2's has made it through buildworld > without hanging silently. If -j1 buildworld completes, > that would be a significant change. The test will take a > week, but the problem has been going on for a year. This isn't related directly to building on the RPi2, but just a general comment that on a system with 1 GB RAM like the RPi2, building with -j3 (or anything more than -j1) is probably wishful thinking at this point given it seems the RAM requirements of LLVM right now seem to be creeping ever upwards. LLVM 19.1.7 seems slower and more memory-hungry than ever before. Maybe it's LTO? I don't know. My current bugbear is the databases/mongodb70 port which will no longer build for me on the 16 GB RAM FreeBSD/amd64 14-STABLE system I use to build ports locally via Poudriere. It will grind away for hours and ultimately fail due to the compiler being out of memory at some point. I found a Bugzilla report by someone who attested it required 24 GB RAM to build, and it will only successfully build now for me if I add an extra 30 GB swap or so on that build system. Even then, it takes an age to build: the last successful one being 12:39:27 (and that potentially benefitting from prior ccache builds). That mongodb70 port takes about an order of magnitude longer to build than an entire buildword/buildkernel on the same system. I guess building software yourself just takes more RAM these days, and recognise that the RPi2 does not have much RAM in the grand scheme of things by today's standards. I hope a "-j1" build works for you. Cheers, Paul.help
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