update benchmark

benchmarks/db_bench.cc

@@ -65,7 +65,7 @@ static const char* FLAGS_benchmarks =
     "zstduncomp,";
 
 // Number of key/values to place in database
-static int FLAGS_num = 1000000;
+static int FLAGS_num = 100000;
 
 // Number of read operations to do.  If negative, do FLAGS_num reads.
 static int FLAGS_reads = -1;