growslice issue

[linchuan4028]

When using proto repeated type field, I encounter the growslice performance issue as call unmarshal function.
Do we have a initilize method to pre allocate slice size for a repeated fields.

here is the schema

message User_Data_Record {
    message KVR {
    }
    message NPSegment {
        repeated KVR kv = 1; /// this filed encoutner the growslice performance issue
    }
    repeated NPSegment segments = 1;
   
}

[linchuan4028]

any one can help?

[AllenX2018]

Can you upload example and benchmarks?
Thanks