From 0adcb82652592ae3a1ca6ea7dcb4ad8b950e7e94 Mon Sep 17 00:00:00 2001
From: John Sully <john@csquare.ca>
Date: Wed, 21 Apr 2021 01:19:44 +0000
Subject: [PATCH] Better RocksDB perf tuning

Former-commit-id: cbe1e0a7c1b5dc49c1adff07b7c32042e673acf4
---
 src/storage/rocksdbfactory.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/storage/rocksdbfactory.cpp b/src/storage/rocksdbfactory.cpp
index 3d725b929..2a781dccc 100644
--- a/src/storage/rocksdbfactory.cpp
+++ b/src/storage/rocksdbfactory.cpp
@@ -5,6 +5,7 @@
 #include <rocksdb/utilities/options_util.h>
 #include <rocksdb/sst_file_manager.h>
 #include <rocksdb/utilities/convenience.h>
+#include <rocksdb/slice_transform.h>
 
 class RocksDBStorageFactory : public IStorageFactory
 {
@@ -70,6 +71,8 @@ RocksDBStorageFactory::RocksDBStorageFactory(const char *dbfile, int dbnum, cons
     options.compression = rocksdb::kNoCompression;
     options.enable_pipelined_write = true;
     options.sst_file_manager = m_pfilemanager;
+    options.allow_mmap_reads = true;
+    options.prefix_extractor.reset(rocksdb::NewFixedPrefixTransform(0));
     rocksdb::BlockBasedTableOptions table_options;
     table_options.block_size = 16 * 1024;
     table_options.cache_index_and_filter_blocks = true;