From 57917f8bc62cab8fee642ed59fc41dfff50f1498 Mon Sep 17 00:00:00 2001
From: Gregory Burd <greg@basho.com>
Date: Fri, 8 Mar 2013 13:33:12 -0500
Subject: [PATCH] Change the config to use a lsm tree rather than btree for
 tables. Stop using direct_io as it forces operations to sync more often,
 slowing things down, at the expense of double-buffering (this will use more
 RAM).

---
 src/riak_kv_wterl_backend.erl | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/src/riak_kv_wterl_backend.erl b/src/riak_kv_wterl_backend.erl
index eb0194e..44ec595 100644
--- a/src/riak_kv_wterl_backend.erl
+++ b/src/riak_kv_wterl_backend.erl
@@ -103,25 +103,25 @@ start(Partition, Config) ->
 				      {create, true},
 				      {logging, true},
 				      {transactional, true},
-				      {direct_io, ["data", "log"]},
 				      {session_max, 128},
 				      {cache_size, "2GB"},
-				      {sync, false},
-				      {verbose,
-				       ["block", "shared_cache", "ckpt", "evict",
-					"evictserver", "fileops", "hazard", "lsm",
-					"mutex", "read", "readserver", "reconcile",
-					"salvage", "verify", "write"]}],
+				      {sync, false}
+				      %% {verbose,
+				      %%  ["block", "shared_cache", "ckpt", "evict",
+				      %% 	"evictserver", "fileops", "hazard", "lsm",
+				      %% 	"mutex", "read", "readserver", "reconcile",
+				      %% 	"salvage", "verify", "write"]}
+				     ],
                     case wterl_conn:open(DataRoot, ConnectionOpts) of
                         {ok, ConnRef} ->
-                            Table = "table:wt" ++ integer_to_list(Partition),
+                            Table = "lsm:wt" ++ integer_to_list(Partition),
                             SessionOpenOpts = [{isolation, "snapshot"}],
                             {ok, SRef} = wterl:session_open(ConnRef, wterl:config_to_bin(SessionOpenOpts)),
                             SessionOpts = [%TODO {block_compressor, "snappy"},
                                            {internal_page_max, "128K"},
-                                           {leaf_page_max, "128K"},
-                                           {lsm_chunk_size, "200MB"},
-                                           {lsm_bloom_config, [{leaf_page_max, "10MB"}]} ],
+                                           {leaf_page_max, "256K"},
+                                           {lsm_chunk_size, "256MB"},
+                                           {lsm_bloom_config, [{leaf_page_max, "16MB"}]} ],
                             ok = wterl:session_create(SRef, Table, wterl:config_to_bin(SessionOpts)),
                             {ok, #state{conn=ConnRef,
                                         table=Table,