On 2025-09-11 09:42, Dan Mahoney (Ports) wrote:
Hey there folks,
I've got poudriere running on a recently-16-ified VM with 8 cores and 48G ram
(up from 32), and to eat the dogfood I'm attempting to build all my own
packages.
lang/rust is a big one. It pontificates for about two hours, then dies with:
[ 45% 1690/3710] Building RISCVGenExegesis.inc...
[ 45% 1691/3710] Building RISCVGenGlobalISel.inc...
FAILED: [code=262] lib/Target/RISCV/RISCVGenGlobalISel.inc
/wrkdirs/usr/ports/lang/rust/work/_build/x86_64-unknown-freebsd/llvm/build/lib/Target/RISCV/RISCVGenGlobalISel.inc
cd /wrkdirs/usr/ports/lang/rust/work/_build/x86_64-unknown-freebsd/llvm/build
&&
/wrkdirs/usr/ports/lang/rust/work/_build/x86_64-unknown-freebsd/llvm/build/bin/llvm-tblgen
-gen-global-isel -I
/wrkdirs/usr/ports/lang/rust/work/rustc-1.89.0-src/src/llvm-project/llvm/lib/Target/RISCV
-I/wrkdirs/usr/ports/lang/rust/work/_build/x86_64-unknown-freebsd/llvm/build/include
-I/wrkdirs/usr/ports/lang/rust/work/rustc-1.89.0-src/src/llvm-project/llvm/include -I
/wrkdirs/usr/ports/lang/rust/work/rustc-1.89.0-src/src/llvm-project/llvm/lib/Target
-no-warn-on-unused-template-args
/wrkdirs/usr/ports/lang/rust/work/rustc-1.89.0-src/src/llvm-project/llvm/lib/Target/RISCV/RISCVGISel.td
--write-if-changed -o lib/Target/RISCV/RISCVGenGlobalISel.inc -d
lib/Target/RISCV/RISCVGenGlobalISel.inc.d
LLVM ERROR: out of memory
Allocation failed
PLEASE submit a bug report tohttps://github.com/llvm/llvm-project/issues/ and
include the crash backtrace.
Stack dump:
0. Program arguments:
/wrkdirs/usr/ports/lang/rust/work/_build/x86_64-unknown-freebsd/llvm/build/bin/llvm-tblgen
-gen-global-isel -I
/wrkdirs/usr/ports/lang/rust/work/rustc-1.89.0-src/src/llvm-project/llvm/lib/Target/RISCV
-I/wrkdirs/usr/ports/lang/rust/work/_build/x86_64-unknown-freebsd/llvm/build/include
-I/wrkdirs/usr/ports/lang/rust/work/rustc-1.89.0-src/src/llvm-project/llvm/include
-I
/wrkdirs/usr/ports/lang/rust/work/rustc-1.89.0-src/src/llvm-project/llvm/lib/Target
-no-warn-on-unused-template-args
/wrkdirs/usr/ports/lang/rust/work/rustc-1.89.0-src/src/llvm-project/llvm/lib/Target/RISCV/RISCVGISel.td
--write-if-changed -o lib/Target/RISCV/RISCVGenGlobalISel.inc -d
lib/Target/RISCV/RISCVGenGlobalISel.inc.d
ninja: build stopped: subcommand failed.
thread 'main' panicked at
/wrkdirs/usr/ports/lang/rust/work/rustc-1.89.0-src/vendor/cmake-0.1.54/src/lib.rs:1119:5:
command did not execute successfully, got: exit status: 6
build script failed, must exit now
stack backtrace:
0: __rustc::rust_begin_unwind
1: core::panicking::panic_fmt
2: cmake::fail
Full logs here:
https://poudriere-src.isc.org/data/freebsd:16:x86:64-pkgbase-default_git/2025-09-11_04h17m42s/logs/rust-1.89.0.log
Is this actually likely an LLVM bug, or is 48G of ram not enough (it barely
climbed at all for most of the files). Note that I'm not doing anything
multi-threaded with Poudriere, this is single CPU bound.
-Dan
Hi,
During linking it can use up quite a bit of memory, especially if you
have multiple jobs running. You will struggle with 12Gb of RAM, 8Gb
swapand ZFS (ARC) using ports and 3 jobs (-j3) using slow CPU (older i3
etc). My Ryzen (7000 series) box needs about 40Gb of RAM (including
tmpfs) alone to build Rust using Poudriere without ARC accounted for and
that's running -j8. It can be a bit hard to estimate as time for linking
processes to finish can wary greatly depending on hardware and if those
accumulate you'll need even more memory because of the slow processingand
multiple running in parallel. Best regards, Daniel
