From 1f979baf8f7d003cfda75329b9151f9c256da417 Mon Sep 17 00:00:00 2001
From: Roman Zeyde <me@romanzey.de>
Date: Wed, 11 Jul 2018 20:33:09 +0300
Subject: [PATCH] Increase compaction readahead to 2MB

This should improve compaction throughput on HDDs.
---
 src/store.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/store.rs b/src/store.rs
index e928399..ef1ee3e 100644
--- a/src/store.rs
+++ b/src/store.rs
@@ -46,6 +46,7 @@ impl DBStore {
         db_opts.create_if_missing(true);
         db_opts.increase_parallelism(2);
         db_opts.set_keep_log_file_num(10);
+        db_opts.set_compaction_readahead_size(2 << 20);
 
         let mut cf_opts = rocksdb::ColumnFamilyOptions::new();
         cf_opts.set_compaction_style(rocksdb::DBCompactionStyle::Level);