Date: Fri, 5 Sep 2025 17:59:50 -0700 From: Mark Millard <marklmi@yahoo.com> To: Nuno Teixeira <eduardo@freebsd.org>, FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org>, FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: git: af60084978a4 - main - Add description for WITH_PTHREADS_ASSERTIONS [turning off debug for personal builds of main ( and stable/* )] Message-ID: <D5A57881-98CD-4323-A0E3-7463DC25AF0B@yahoo.com>
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Nuno Teixeira <eduardo_at_freebsd.org> wrote on Date: Fri, 05 Sep 2025 22:27:07 UTC : > Thanks for the hint, I missed 642cd511028b . > > Think I'm good now: > > /etc/src.conf > WITH_MALLOC_PRODUCTION=yes > WITHOUT_LLVM_ASSERTIONS=yes > WITHOUT_PTHREADS_ASSERTIONS=yes Another potential one is: QUOTE > Is there a reason that ASSERT_DEBUG > ( in share/mk/bsd.opts.mk ) is left enabled > ( listed in __DEFAULT_YES_OPTIONS )? QUOTE You might want: WITHOUT_ASSERT_DEBUG= See: https://lists.freebsd.org/archives/freebsd-stable/2025-September/003110.html for Colin's comment about why it is unchanged in official stable/* and releng/*.* builds (instead staying like in main) and my reply. What you want to do for ASSERT_DEBUG might depend on your security context's requirements if you are willing to use a setting that FreeBSD official builds never use. Side note: I'll note that the usage of all 4 of these ignore the "yes" text detail and are tested only for being defined vs. not. "no" would get the same result. > Cheers! > > > Colin Percival <cperciva@freebsd.org> escreveu (sexta, 5/09/2025 à(s) > 23:07): > > > On 9/5/25 14:57, Nuno Teixeira wrote: > > > For people that turn off debug on main, should WITH_PTHREADS_ASSERTIONS > > be > > > turned off? > > > > > > e.g. > > > /etc/src.conf: > > > WITH_MALLOC_PRODUCTION=yes > > > WITHOUT_LLVM_ASSERTIONS=yes > > > > According to commit 642cd511028b running WITHOUT_PTHREADS_ASSERTIONS > > improves > > mutex performance by 5-18%. So yes if you want maximal performance on HEAD > > you should probably turn this off. > > > > Colin Percival === Mark Millard marklmi at yahoo.comhome | help
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