make getMore buffer big since we know there are lots of results

1 files changed, 7 insertions, 2 deletions

diff --git a/db/query.cpp b/db/query.cpp
index 7fdf3197bdd..baa82c7102f 100644
--- a/db/query.cpp
+++ b/db/query.cpp
@@ -907,9 +907,14 @@ namespace mongo {
     }
 
     QueryResult* getMore(const char *ns, int ntoreturn, long long cursorid) {
-        BufBuilder b(32768);
-
         ClientCursor *cc = ClientCursor::find(cursorid);
+        
+        int bufSize = 512;
+        if ( cc ){
+            bufSize += sizeof( QueryResult );
+            bufSize += ( ntoreturn ? 4 : 1 ) * 1024 * 1024;
+        }
+        BufBuilder b( bufSize );
 
         b.skip(sizeof(QueryResult));