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[bug#67733] [PATCH] daemon: Sacrifice builders on OOM.
From: |
Tobias Geerinckx-Rice |
Subject: |
[bug#67733] [PATCH] daemon: Sacrifice builders on OOM. |
Date: |
Sun, 3 Dec 2023 01:00:00 +0100 |
* nix/libstore/build.cc (DerivationGoal::runChild):
Maximise our OOM score adjustment.
Change-Id: I418c763b499ca16e1ffe3c6033319112b9744f51
---
nix/libstore/build.cc | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/nix/libstore/build.cc b/nix/libstore/build.cc
index e8259aa4e8..9241418abc 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. */
--
2.41.0
- [bug#67733] [PATCH] daemon: Sacrifice builders on OOM.,
Tobias Geerinckx-Rice <=