diff --git a/db-benchmark-test/Makefile b/db-benchmark-test/Makefile
index 5a84d81d22a..d71b31c278e 100644
--- a/db-benchmark-test/Makefile
+++ b/db-benchmark-test/Makefile
@@ -2,7 +2,7 @@
 # build with Berkeley DB 4.1: make BDB=/usr/local/BerkeleyDB.4.1
 # build with TokuDB: make BDB=~/svn/tokudb
 
-BENCHDB = bench.db
+BENCHDBS = bench.bdb/ bench.tokudb
 
 CFLAGS = -Wall -Werror -g
 # CFLAGS += -pg
@@ -16,9 +16,14 @@ CPPFLAGS =
 LDFLAGS = -ldb
 endif
 
-TARGET = db-benchmark-test
+TARGETS = db-benchmark-test-bdb db-benchmark-test-tokudb
 
-$(TARGET):
+default: $(TARGETS)
 
 clean:
-	rm -rf $(TARGET) $(BENCHDB)
+	rm -rf $(TARGETS) $(BENCHDBS)
+
+db-benchmark-test-tokudb: db-benchmark-test.c
+	cc -Wall -Werror -g -O2  -I../include -L../lib -ldb -Wl,-rpath,../lib  $<  -o $@ -DDIRSUF=tokudb
+db-benchmark-test-bdb: db-benchmark-test.c
+	cc -Wall -Werror -g -O2                        -ldb                    $<  -o $@ -DDIRSUF=bdb
diff --git a/db-benchmark-test/db-benchmark-test.c b/db-benchmark-test/db-benchmark-test.c
index 5072ad76b37..edfa7263278 100644
--- a/db-benchmark-test/db-benchmark-test.c
+++ b/db-benchmark-test/db-benchmark-test.c
@@ -10,14 +10,18 @@
 #include <db.h>
 
 enum { SERIAL_SPACING = 1<<6 };
-enum { ITEMS_TO_INSERT_PER_ITERATION = 1<<15 };
+enum { ITEMS_TO_INSERT_PER_ITERATION = 1<<20 };
+enum { ITEMS_PER_TRANSACTION = 1<<14 };
 //enum { ITEMS_TO_INSERT_PER_ITERATION = 1<<14 };
 enum { BOUND_INCREASE_PER_ITERATION = SERIAL_SPACING*ITEMS_TO_INSERT_PER_ITERATION };
 
 #define CKERR(r) if (r!=0) fprintf(stderr, "%s:%d error %d %s\n", __FILE__, __LINE__, r, db_strerror(r)); assert(r==0);
 
 
-char *dbdir = "./bench/";
+
+#define STRINGIFY2(s) #s
+#define STRINGIFY(s) STRINGIFY2(s)
+char *dbdir = "./bench."  STRINGIFY(DIRSUF) "/"; /* DIRSUF is passed in as a -D argument to the compiler. */;
 char *dbfilename = "bench.db";
 char *dbname;
 
@@ -26,19 +30,28 @@ DB *db;
 DB_TXN *tid=0;
 
 int do_transactions = 0;
+int n_insertions_since_txn_began=0;
 
 void setup (void) {
     int r;
    
-    char fullname[strlen(dbdir) + strlen("/") + strlen(dbfilename) + 1];
-    sprintf(fullname, "%s/%s", dbdir, dbfilename);
-    unlink(fullname);
+    {
+	char unlink_cmd[strlen(dbdir) + strlen("rf -rf ") + 1];
+	snprintf(unlink_cmd, sizeof(unlink_cmd), "rm -rf %s", dbdir);
+	//printf("unlink_cmd=%s\n", unlink_cmd);
+	system(unlink_cmd);
+    }
     if (strcmp(dbdir, ".") != 0)
         mkdir(dbdir, 0755);
 
     r = db_env_create(&dbenv, 0);
     assert(r == 0);
 
+    if (dbenv->set_lk_max) {
+	r = dbenv->set_lk_max(dbenv, ITEMS_PER_TRANSACTION*2);
+	assert(r==0);
+    }
+
     if (dbenv->set_cachesize) {
         r = dbenv->set_cachesize(dbenv, 0, 128*1024*1024, 1);
         if (r != 0) 
@@ -64,24 +77,6 @@ void setup (void) {
 	r=tid->commit(tid, 0);    assert(r==0);
     }
 
-    if (do_transactions) {
-	DBT key,data;
-	
-	r=dbenv->txn_begin(dbenv, 0, &tid, 0); assert(r==0);
-
-	memset(&key, 0, sizeof(key));
-	memset(&data, 0, sizeof(data));
-	key.data="hello";
-	key.size=6;
-	data.data="there";
-	data.size=6;
-	r=db->put(db, tid, &key, &data, 0);
-	CKERR(r);
-
-	r=tid->commit(tid, 0);    assert(r==0);
-
-    }
-
 }
 
 void shutdown (void) {
@@ -113,6 +108,15 @@ void insert (long long v) {
     long_long_to_array(vc, v);
     int r = db->put(db, tid, fill_dbt(&kt, kc, 8), fill_dbt(&vt, vc, 8), 0);
     CKERR(r);
+    if (do_transactions) {
+	if (n_insertions_since_txn_began>=ITEMS_PER_TRANSACTION) {
+	    n_insertions_since_txn_began=0;
+	    r = tid->commit(tid, 0); assert(r==0);
+	    r=dbenv->txn_begin(dbenv, 0, &tid, 0); assert(r==0);
+	    n_insertions_since_txn_began=0;
+	}
+	n_insertions_since_txn_began++;
+    }
 }
 
 void serial_insert_from (long long from) {
diff --git a/newbrt/log.c b/newbrt/log.c
index 63eb933a672..417ba8dfa10 100644
--- a/newbrt/log.c
+++ b/newbrt/log.c
@@ -58,8 +58,8 @@ int tokulogger_log_bytes(TOKULOGGER logger, int nbytes, void *bytes) {
 	printf("%s:%d creat(%s, ...)\n", __FILE__, __LINE__, fname);
 	logger->fd = creat(fname, O_EXCL | 0700);
 	if (logger->fd==-1) return errno;
+	logger->next_log_file_number++;
     }
-    logger->next_log_file_number++;
     if (logger->n_in_buf + nbytes > LOGGER_BUF_SIZE) {
 	struct iovec v[2];
 	v[0].iov_base = logger->buf;
@@ -73,7 +73,7 @@ int tokulogger_log_bytes(TOKULOGGER logger, int nbytes, void *bytes) {
 	if (logger->n_in_file > 100<<20) {
 	    r = close(logger->fd);
 	    if (r!=0) return errno;
-	    logger->fd=0;
+	    logger->fd=-1;
 	    logger->n_in_file = 0;
 	}
     } else {
diff --git a/src/ydb.c b/src/ydb.c
index 73ebe7b24cf..187a9ab2bc8 100644
--- a/src/ydb.c
+++ b/src/ydb.c
@@ -171,7 +171,7 @@ int  __toku_db_env_set_lk_detect (DB_ENV *env, u_int32_t detect) {
 }
 int  __toku_db_env_set_lk_max (DB_ENV *env, u_int32_t lk_max) {
   barf();
-  return 1;
+  return 0;
 }
 void __toku_db_env_set_noticecall (DB_ENV *env, void (*noticecall)(DB_ENV *, db_notices)) {
     env->i->noticecall = noticecall;
@@ -241,7 +241,7 @@ int db_env_create (DB_ENV **envp, u_int32_t flags) {
 
 
 int __toku_db_txn_commit (DB_TXN *txn, u_int32_t flags) {
-  notef("flags=%d\n", flags);
+  //notef("flags=%d\n", flags);
   if (!txn) return -1;
   int r = tokulogger_log_commit(txn->i->tokutxn);
   if (r!=0) return r;
@@ -259,7 +259,7 @@ static TXNID next_txn=0;
 
 int txn_begin (DB_ENV *env, DB_TXN *stxn, DB_TXN **txn, u_int32_t flags) {
   DB_TXN *result = malloc_zero(sizeof(*result));
-  notef("parent=%p flags=0x%x\n", stxn, flags);
+  //notef("parent=%p flags=0x%x\n", stxn, flags);
   result->commit = __toku_db_txn_commit;
   result->id     = __toku_db_txn_id;
   result->i      = malloc(sizeof(*result->i));