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-rw-r--r--preload-index.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/preload-index.c b/preload-index.c
index 70a4c80878..75564c497a 100644
--- a/preload-index.c
+++ b/preload-index.c
@@ -79,6 +79,8 @@ static void preload_index(struct index_state *index,
return;
threads = index->cache_nr / THREAD_COST;
+ if ((index->cache_nr > 1) && (threads < 2) && getenv("GIT_FORCE_PRELOAD_TEST"))
+ threads = 2;
if (threads < 2)
return;
if (threads > MAX_PARALLEL)