table: disable merging NLRIs if we don't have many NLRIs

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>

1 files changed, 6 insertions, 1 deletions

diff --git a/table/message.go b/table/message.go
index c5dfb4d4..0066fc36 100644
--- a/table/message.go
+++ b/table/message.go
@@ -193,9 +193,14 @@ func CreateUpdateMsgFromPaths(pathList []*Path) []*bgp.BGPMessage {
 	var msgs []*bgp.BGPMessage
 
 	pathByAttrs := make(map[uint32][]*bucket)
-
+	pathLen := len(pathList)
 	for _, path := range pathList {
 		y := func(p *Path) bool {
+			// the merging logic makes gobgpd slower so if
+			// paths are not many, let's avoid mering.
+			if pathLen < 1024 {
+				return false
+			}
 			if p.GetRouteFamily() != bgp.RF_IPv4_UC {
 				return false
 			}