Date: Sun, 28 Jan 2024 16:05:03 -0800 From: David Wolfskill <david@catwhisker.org> To: Mark Millard <marklmi@yahoo.com> Cc: FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org> Subject: Re: Should changes in src/usr.sbin/bhyve/ trigger an llvm rebuild? Message-ID: <Zbbrr6fh3sQ_VX-8@albert.catwhisker.org> In-Reply-To: <8A79DE24-403E-4E73-82B6-0E5CF4F27604@yahoo.com> References: <EAD76C2C-065E-4EFA-901F-1C0FD13FFC65.ref@yahoo.com> <EAD76C2C-065E-4EFA-901F-1C0FD13FFC65@yahoo.com> <ZbZ2u9FlUhvb1orU@albert.catwhisker.org> <5BCB8F1A-B5D5-4506-87E1-8B26E713C6F5@yahoo.com> <ZbbPyYNtF6prkdtd@albert.catwhisker.org> <B1231700-D7A1-4190-AA2A-495CEA954535@yahoo.com> <8A79DE24-403E-4E73-82B6-0E5CF4F27604@yahoo.com>
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--gwCD4wmeEq1kYHVT Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Jan 28, 2024 at 03:00:59PM -0800, Mark Millard wrote: > ... > To be clear, referencing details of your context: >=20 > When you had the stable/14 machines at 1c090bf880bf: >=20 > A) You built (META_MODE): 63a7e799b32c > B) You installed: 63a7e799b32c > C) You rebooted into: 63a7e799b32c >=20 > I'm claiming that next doing: >=20 > D) build again (still META_MODE): 63a7e799b32c >=20 > would have rebuilt llvm at that point, the > time-relationship cause(s) being set up > during (B). As it happens, I rather fumble-fingered the (intended) reboot on the 2nd laptop (and started another rebuild instead). And I do these within script(1), as it's handy to have a record. Note that this differes from the sequence you cite above, in that I failed to do the reboot. So I powered it back up and -- without updating sources (or the local repo mirror, for that matter) -- did another rebuild. Here is an extract of some salient lines from the typescript file: g1-48(14.0-S)[4] egrep ' built in |Installing .* (started|completed)|Removi= ng old libraries| stable/14-n' s1 FreeBSD g1-48.catwhisker.org 14.0-STABLE FreeBSD 14.0-STABLE #38 stable/14-= n266551-63a7e799b32c: Sat Jan 27 11:40:05 UTC 2024 root@g1-48.catwhiske= r.org:/common/S1/obj/usr/src/amd64.amd64/sys/CANARY amd64 1400506 1400506 >>> World built in 2351 seconds, ncpu: 8, make -j16 >>> Kernel(s) CANARY built in 898 seconds, ncpu: 8, make -j16 >>> Installing kernel CANARY completed on Sun Jan 28 12:25:27 UTC 2024 >>> Installing everything started on Sun Jan 28 12:25:57 UTC 2024 >>> Installing everything completed on Sun Jan 28 12:28:01 UTC 2024 FreeBSD g1-48.catwhisker.org 14.0-STABLE FreeBSD 14.0-STABLE #38 stable/14-= n266551-63a7e799b32c: Sat Jan 27 11:40:05 UTC 2024 root@g1-48.catwhiske= r.org:/common/S1/obj/usr/src/amd64.amd64/sys/CANARY amd64 1400506 1400506 >>> World built in 116 seconds, ncpu: 8, make -j16 >>> Kernel(s) CANARY built in 920 seconds, ncpu: 8, make -j16 >>> Installing kernel CANARY completed on Sun Jan 28 12:47:55 UTC 2024 >>> Installing everything started on Sun Jan 28 12:48:25 UTC 2024 >>> Installing everything completed on Sun Jan 28 12:50:01 UTC 2024 FreeBSD g1-48.catwhisker.org 14.0-STABLE FreeBSD 14.0-STABLE #40 stable/14-= n266554-2ee407b6068a: Sun Jan 28 12:39:17 UTC 2024 root@g1-48.catwhiske= r.org:/common/S1/obj/usr/src/amd64.amd64/sys/CANARY amd64 1400506 1400506 >>> Removing old libraries FreeBSD g1-48.catwhisker.org 14.0-STABLE FreeBSD 14.0-STABLE #40 stable/14-= n266554-2ee407b6068a: Sun Jan 28 12:39:17 UTC 2024 root@g1-48.catwhiske= r.org:/common/S1/obj/usr/src/amd64.amd64/sys/CANARY amd64 1400506 1400506 >>> World built in 124 seconds, ncpu: 8, make -j16 >>> Kernel(s) CANARY built in 901 seconds, ncpu: 8, make -j16 >>> Installing kernel CANARY completed on Sun Jan 28 23:34:39 UTC 2024 >>> Installing everything started on Sun Jan 28 23:35:09 UTC 2024 >>> Installing everything completed on Sun Jan 28 23:37:16 UTC 2024 FreeBSD g1-48.catwhisker.org 14.0-STABLE FreeBSD 14.0-STABLE #41 stable/14-= n266554-2ee407b6068a: Sun Jan 28 23:26:10 UTC 2024 root@g1-48.catwhiske= r.org:/common/S1/obj/usr/src/amd64.amd64/sys/CANARY amd64 1400506 1400506 >>> Removing old libraries g1-48(14.0-S)[5] (The ">>> Removing old libraries" is an artifact from "make delete-old-libs", which I do on the first reboot after a build.) If we just look at the "make buildworld" times, we see: >>> World built in 2351 seconds, ncpu: 8, make -j16 >>> World built in 116 seconds, ncpu: 8, make -j16 >>> World built in 124 seconds, ncpu: 8, make -j16 I suggest that -- within *this* "experiment's" error -- 116 sec is not significantly different from 124 sec, but that 2351 sec is significantly different from either. > .... Peace, david --=20 David H. Wolfskill david@catwhisker.org Do these ends really justify those means? See https://www.catwhisker.org/~david/publickey.gpg for my public key. --gwCD4wmeEq1kYHVT Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iNUEARYKAH0WIQSTLzOSbomIK53fjFliipiWhXYx5QUCZbbrr18UgAAAAAAuAChp c3N1ZXItZnByQG5vdGF0aW9ucy5vcGVucGdwLmZpZnRoaG9yc2VtYW4ubmV0OTMy RjMzOTI2RTg5ODgyQjlEREY4QzU5NjI4QTk4OTY4NTc2MzFFNQAKCRBiipiWhXYx 5aujAP41F5fOPOAT++5oGNVxfYBrCsaC4oWGJ0HFCCDFFmSLWgD9Gm8IdbOIU0X3 9fE2g7Qu0OgQMSh5L+KezpKR+uFyqgE= =0GKs -----END PGP SIGNATURE----- --gwCD4wmeEq1kYHVT--
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