From 4696b8199f6206ff2c496e63049458af4fc40e02 Mon Sep 17 00:00:00 2001
From: Tamo <tamo@meilisearch.com>
Date: Tue, 24 Oct 2023 16:03:10 +0200
Subject: [PATCH] 2 additional precent won by reserving the memory before
 pushing in the vec

---
 milli/src/heed_codec/roaring_bitmap/cbo_roaring_bitmap_codec.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/milli/src/heed_codec/roaring_bitmap/cbo_roaring_bitmap_codec.rs b/milli/src/heed_codec/roaring_bitmap/cbo_roaring_bitmap_codec.rs
index 4c40ac7b1..ef37ddc8b 100644
--- a/milli/src/heed_codec/roaring_bitmap/cbo_roaring_bitmap_codec.rs
+++ b/milli/src/heed_codec/roaring_bitmap/cbo_roaring_bitmap_codec.rs
@@ -71,6 +71,7 @@ impl CboRoaringBitmapCodec {
         for bytes in slices {
             if bytes.len() <= THRESHOLD * size_of::<u32>() {
                 debug_assert!(bytes.len() % size_of::<u32>() == 0);
+                vec.reserve(bytes.len() / size_of::<u32>());
 
                 for bytes in bytes.chunks_exact(size_of::<u32>()) {
                     // unwrap can't happens since we ensured that everything