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Date:      Sat, 22 Dec 2018 12:55:07 -0800
From:      Mark Millard <marklmi@yahoo.com>
To:        freebsd-emulation@freebsd.org, FreeBSD Current <freebsd-current@freebsd.org>, ports-list freebsd <freebsd-ports@freebsd.org>
Cc:        freebsd-arm <freebsd-arm@freebsd.org>, FreeBSD Toolchain <freebsd-toolchain@freebsd.org>
Subject:   Re: A reliable port cross-build failure (hangup) in my context (amd64->armv7 cross build, with native-tool speedup involved)
Message-ID:  <0154C3AC-D85B-4FCF-BA63-454BC26BC1A2@yahoo.com>
In-Reply-To: <865A13C8-9749-486E-9F79-5EEDDECBE621@yahoo.com>
References:  <FF9B4284-4E6B-4D36-86A0-18861B527AC0@yahoo.com> <865A13C8-9749-486E-9F79-5EEDDECBE621@yahoo.com>

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[I found my E-mail records reporting successful builds using
qemu-user-static from ports head -r484783 under FreeBSD
head -r340287.]

On 2018-Dec-22, at 00:10, Mark Millard <marklmi at yahoo.com> wrote:

> [I messed up the freebsd-emulation email address the first time I sent
> this. I also forgot to indicate the qemu-user-static vintage =
relationship.]
>=20
> I had been reporting intermittent hang-ups for my =
amd64->{aarch64,armv7} port cross
> builds in another message sequence. But it turns out that one thing I =
ran into
> has hung-up every time, the same way, for amd64->armv7 cross builds:
> multimedia/gstreamer1-qt@qt5 . So I extract the material here into a =
separate report
> with some updated notes.
>=20
> A little context: I had built from ports head -r484783 before under =
FreeBSD head
> -r340287 (as I remember the version). Back then it did not have this =
problem that it
> now has under FreeBSD head -r341836 . One ports-specific change was to =
force perl5.28
> as the default instead of perl5.26 originally. In fact this is what =
drives what is
> being rebuilt for my experiment that caught this. But I doubt the perl =
version is
> important to the problem. The context has a Ryzen Threadripper 1950X =
and has been
> tested both for FreeBSD under Hyper-V and for the same media =
native-booted. Both
> hang-up at the same point as seen via ps or top. The native tools for =
cross-build
> speedup were in use. Cross-builds targeting aarch64 did not get this =
problem but
> targeting armv7 did. 121 of 129 armv7 ports built before the hang-up =
for the first
> armv7 try.
>=20
> ADDED: The qemu-user-static back with head -r340287 before installing =
the
> updated ports would likely be different than the -r484783 vintage. So =
both
> FreeBSD and qemu-user-static may have changed over the comparison.

CORRECTION to ADDED: Back on 2018-Nov-11 I reported successful =
cross-builds
based on qemu-user-static from ports head -484783 --all built under =
FreeBSD
head -r340287 . So the use of the perl5.28 as the forced-default and the
newer FreeBSD head version -r341836 as the context are the differences =
here.

> The hang-up:
>=20
> In the port rebuilds targeting armv7, multimedia/gstreamer1-qt@qt5 =
hung-up and timed
> out. Looking during the wait in later tries shows something much like =
(from one of the
> examples):
>=20
> root       33719    0.0  0.0  12920  3528  0  I    11:40       0:00.03 =
| |           `-- sh: poudriere[FBSDFSSDjailArmV7-default][02]: =
build_pkg (gstreamer1-qt5-1.2.0_14) (sh)
> root       41551    0.0  0.0  12920  3520  0  I    11:43       0:00.00 =
| |             `-- sh: poudriere[FBSDFSSDjailArmV7-default][02]: =
build_pkg (gstreamer1-qt5-1.2.0_14) (sh)
> root       41552    0.0  0.0  10340  1744  0  IJ   11:43       0:00.01 =
| |               `-- /usr/bin/make -C =
/usr/ports/multimedia/gstreamer1-qt FLAVOR=3Dqt5 build
> root       41566    0.0  0.0  10236  1796  0  IJ   11:43       0:00.00 =
| |                 `-- /bin/sh -e -c (cd =
/wrkdirs/usr/ports/multimedia/gstreamer1-qt/work-qt5/.build; if ! =
/usr/bin/env QT_SELE
> root       41567    0.0  0.0  89976 12896  0  IJ   11:43       0:00.07 =
| |                   `-- /usr/local/bin/qemu-arm-static ninja -j28 -v =
all
> root       41585    0.0  0.0 102848 25056  0  IJ   11:43       0:00.10 =
| |                     |-- /usr/local/bin/qemu-arm-static =
/usr/local/bin/cmake -E cmake_autogen /wrkdirs/usr/ports/multimedia/g
> root       41586    0.0  0.0 102852 25072  0  IJ   11:43       0:00.11 =
| |                     `-- /usr/local/bin/qemu-arm-static =
/usr/local/bin/cmake -E cmake_autogen /wrkdirs/usr/ports/multimedia/g
>=20
> or as top showed it:
>=20
> 41552 root          1  52    0    10M  1744K    0 wait    15   0:00   =
0.00% /usr/bin/make -C /usr/ports/multimedia/gstreamer1-qt FLAVOR=3Dqt5 =
build
> 41566 root          1  52    0    10M  1796K    0 wait     1   0:00   =
0.00% /bin/sh -e -c (cd =
/wrkdirs/usr/ports/multimedia/gstreamer1-qt/work-qt5/.build; if ! =
/usr/bin/env QT_SELECT=3Dqt5 QMAKEMODULES
> 41567 root          2  52    0    88M    13M    0 select   4   0:00   =
0.00% /usr/local/bin/qemu-arm-static ninja -j28 -v all
> 41585 root          2  52    0   100M    24M    0 kqread   8   0:00   =
0.00% /usr/local/bin/qemu-arm-static /usr/local/bin/cmake -E =
cmake_autogen /wrkdirs/usr/ports/multimedia/gstreamer1-qt/work-qt5/.
> 41586 root          2  52    0   100M    24M    0 kqread  22   0:00   =
0.00% /usr/local/bin/qemu-arm-static /usr/local/bin/cmake -E =
cmake_autogen /wrkdirs/usr/ports/multimedia/gstreamer1-qt/work-qt5/.
>=20
> So: waiting in kqread trying to run cmake.
>=20
> Unlike some intermittent hang-ups, attaching-then-detaching via gdb =
does not
> resume the hung-up processes. Kills of the processes waiting on kqread =
stop
> the build.
>=20
> Given the prior ports have been built already, building just
> multimedia/gstreamer1-qt@qt5 still gets the hang-up at the same point.
>=20
> Building anything that requires multimedia/gstreamer1-qt@qt5 seems to =
be
> solidly blocked in my environment.


=3D=3D=3D
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)




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