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| author | Tobias Geerinckx-Rice <me@tobias.gr> | 2023-11-19 01:00:00 +0100 |
|---|---|---|
| committer | Tobias Geerinckx-Rice <me@tobias.gr> | 2023-12-10 01:00:00 +0100 |
| commit | d993ed43b2bae8717437aa27d9d33fd223a6411f (patch) | |
| tree | af1b699abfe93a7f1d6c6565c8cd0512f0763e32 /nix/libstore/build.cc | |
| parent | 38035705ed29206eb9e9f774b9d1e98c9be53a16 (diff) | |
| download | guix-d993ed43b2bae8717437aa27d9d33fd223a6411f.tar guix-d993ed43b2bae8717437aa27d9d33fd223a6411f.tar.gz | |
daemon: Sacrifice builders on OOM.
* nix/libstore/build.cc (DerivationGoal::runChild):
Maximise our OOM score adjustment.
Change-Id: I418c763b499ca16e1ffe3c6033319112b9744f51
Diffstat (limited to 'nix/libstore/build.cc')
| -rw-r--r-- | nix/libstore/build.cc | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/nix/libstore/build.cc b/nix/libstore/build.cc index e8259aa4e8..54555b92d7 100644 --- a/nix/libstore/build.cc +++ b/nix/libstore/build.cc @@ -2154,6 +2154,12 @@ void DerivationGoal::runChild() determinism. */ int cur = personality(0xffffffff); if (cur != -1) personality(cur | ADDR_NO_RANDOMIZE); + + /* Ask the kernel to eagerly kill us & our children if it runs out of + memory, regardless of blame, to preserve ‘real’ user data & state. */ + try { + writeFile("/proc/self/oom_score_adj", "1000"); // 100% + } catch (...) { ignoreException(); } #endif /* Fill in the environment. */ |