From 1ebaf7aa17672bdc6e83e6c04c4c13e142f57629 Mon Sep 17 00:00:00 2001
From: Quentin Dufour <quentin@deuxfleurs.fr>
Date: Sat, 17 Aug 2024 13:17:16 +0200
Subject: [PATCH] force flag "no read ahead" on LMDB

---
 src/db/open.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/db/open.rs b/src/db/open.rs
index 7114fed6..057c7ae4 100644
--- a/src/db/open.rs
+++ b/src/db/open.rs
@@ -95,6 +95,7 @@ pub fn open_db(path: &PathBuf, engine: Engine, opt: &OpenOpt) -> Result<Db> {
 			env_builder.map_size(map_size);
 			env_builder.max_readers(2048);
 			unsafe {
+				env_builder.flag(crate::lmdb_adapter::heed::flags::Flags::MdbNoRdAhead);
 				env_builder.flag(crate::lmdb_adapter::heed::flags::Flags::MdbNoMetaSync);
 				if !opt.fsync {
 					env_builder.flag(heed::flags::Flags::MdbNoSync);