From 46aff4e7066d35688d14bd64c710ef4978b2bb12 Mon Sep 17 00:00:00 2001
From: Kerollmops <clement@meilisearch.com>
Date: Mon, 21 Jul 2025 20:27:22 +0200
Subject: [PATCH] Change the ef construction to 64

---
 crates/milli/src/vector/mod.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/crates/milli/src/vector/mod.rs b/crates/milli/src/vector/mod.rs
index 5414526ae..5955de277 100644
--- a/crates/milli/src/vector/mod.rs
+++ b/crates/milli/src/vector/mod.rs
@@ -147,7 +147,7 @@ impl HannoyWrapper {
             if self.quantized {
                 let writer = hannoy::Writer::new(self.quantized_db(), index, dimension);
                 if writer.need_build(wtxn)? {
-                    writer.builder(rng).ef_construction(33).build::<16, 32>(wtxn)?
+                    writer.builder(rng).ef_construction(64).build::<16, 32>(wtxn)?
                 } else if writer.is_empty(wtxn)? {
                     continue;
                 }
@@ -173,7 +173,7 @@ impl HannoyWrapper {
                         .available_memory(hannoy_memory.unwrap_or(usize::MAX))
                         // .progress(|step| progress.update_progress_from_hannoy(step))
                         // .cancel(cancel)
-                        .ef_construction(33)
+                        .ef_construction(64)
                         .build::<16, 32>(wtxn)?;
                 } else if writer.is_empty(wtxn)? {
                     continue;