From 2b2b2cac1f8faf146818889d36c592eece54f43f Mon Sep 17 00:00:00 2001
From: sakridge <sakridge@gmail.com>
Date: Tue, 14 Apr 2020 16:40:13 -0700
Subject: [PATCH] limit test jobs to 16 to prevent OOM (#9500)

---
 ci/test-stable.sh | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/ci/test-stable.sh b/ci/test-stable.sh
index 4ba5bd6f6..b25bd6da4 100755
--- a/ci/test-stable.sh
+++ b/ci/test-stable.sh
@@ -38,10 +38,15 @@ test -d target/release/bpf && find target/release/bpf -name '*.d' -delete
 # Clear the BPF sysroot files, they are not automatically rebuilt
 rm -rf target/xargo # Issue #3105
 
+# Limit compiler jobs to reduce memory usage
+# on machines with 1gb/thread of memory
+NPROC=$(nproc)
+NPROC=$((NPROC>16 ? 16 : NPROC))
+
 echo "Executing $testName"
 case $testName in
 test-stable)
-  _ cargo +"$rust_stable" test --all --exclude solana-local-cluster ${V:+--verbose} -- --nocapture
+  _ cargo +"$rust_stable" test --jobs "$NPROC" --all --exclude solana-local-cluster ${V:+--verbose} -- --nocapture
   _ cargo +"$rust_stable" test --manifest-path bench-tps/Cargo.toml --features=move ${V:+--verbose} test_bench_tps_local_cluster_move -- --nocapture
   ;;
 test-stable-perf)