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Hermes SMTP Server) with ESMTPA ID a547a8e9334d1440951a9b824546c146; Tue, 09 Dec 2025 20:32:57 +0000 (UTC) Content-Type: text/plain; charset=us-ascii List-Id: Discussions about the use of FreeBSD-current List-Archive: https://lists.freebsd.org/archives/freebsd-current List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-current@FreeBSD.org Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3826.700.81\)) Subject: Re: performance regressions in 15.0 [The Microsoft Dev Kit 2023 buildworld took about 6 minutes less time for jemalloc 5.3.0, not more, for non-debug contexts] From: Mark Millard In-Reply-To: <20251209172255.6d1a7f4c@rimwks.local> Date: Tue, 9 Dec 2025 12:32:46 -0800 Cc: FreeBSD Current , FreeBSD-STABLE Mailing List Content-Transfer-Encoding: quoted-printable Message-Id: References: <18FB2858-5CBB-4B7A-8089-224A58C6A160@yahoo.com> <19A848A6-0042-4873-B70D-AD6805225B92@yahoo.com> <902C948B-0A4C-48E1-8C6C-1BC7A15209D7@yahoo.com> <33F5F7DE-8DFA-47E2-A890-E07564825D05@yahoo.com> <20251209172255.6d1a7f4c@rimwks.local> To: Rozhuk Ivan X-Mailer: Apple Mail (2.3826.700.81) X-Spamd-Bar: --- X-Spamd-Result: default: False [-4.00 / 15.00]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-0.999]; DMARC_POLICY_ALLOW(-0.50)[yahoo.com,reject]; R_DKIM_ALLOW(-0.20)[yahoo.com:s=s2048]; R_SPF_ALLOW(-0.20)[+ptr:yahoo.com]; MIME_GOOD(-0.10)[text/plain]; DKIM_TRACE(0.00)[yahoo.com:+]; TO_DN_ALL(0.00)[]; RCVD_TLS_LAST(0.00)[]; FROM_HAS_DN(0.00)[]; ARC_NA(0.00)[]; DWL_DNSWL_NONE(0.00)[yahoo.com:dkim]; FREEMAIL_TO(0.00)[gmail.com]; FREEMAIL_FROM(0.00)[yahoo.com]; MIME_TRACE(0.00)[0:+]; RCPT_COUNT_THREE(0.00)[3]; ASN(0.00)[asn:36647, ipnet:98.137.64.0/20, country:US]; RCVD_VIA_SMTP_AUTH(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; FROM_EQ_ENVFROM(0.00)[]; FREEMAIL_ENVFROM(0.00)[yahoo.com]; MLMMJ_DEST(0.00)[freebsd-current@freebsd.org]; APPLE_MAILER_COMMON(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; RWL_MAILSPIKE_POSSIBLE(0.00)[98.137.64.206:from]; TAGGED_RCPT(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[98.137.64.206:from] X-Rspamd-Queue-Id: 4dQrCB6XJRz43M8 On Dec 9, 2025, at 07:22, Rozhuk Ivan wrote: > On Mon, 8 Dec 2025 09:23:52 -0800 > Mark Millard wrote: >=20 >> But, as of yet, I've no good evidence for blaming >> jemalloc as a major contributor to those timing >> ratios --or for blaming any other specific part >> of 15.0 . >=20 > If you want to bench jmalloc - there is another ways to do that = without building something. > Try to find some sythetic benchmarks. > Also jmalloc can be build without OS rebuild and linked with bench. >=20 > This 2 things can reduce time to tests, but it will eliminate OS = integation factors. > Run same bench on different OS may give more info. >=20 [I've eliminated direct Email to most everyone for this reply. There is not even minor new technical content.] At this point I'm more likely to explore if I get similar ratios as ampere[13] do for some port-package builds that have the large ratios on ampere[13]. There are examples that are not as overall time consuming for ampere[13] as what I've already referenced (but are still non-trivial for the time taken). As stands, I do not have a good reproduce-the-issue context, much less one with build time frames I'd be willing to deal with in my environment. =3D=3D=3D Mark Millard marklmi at yahoo.com