hack-instrument-entry-alloc-and-dealloc.patch

diff --git a/contrib/pg_stat_statements/pg_stat_statements.c b/contrib/pg_stat_statements/pg_stat_statements.c
index 6f62a531f7..ffdc14a1eb 100644
--- a/contrib/pg_stat_statements/pg_stat_statements.c
+++ b/contrib/pg_stat_statements/pg_stat_statements.c
@@ -1373,6 +1373,10 @@ pgss_store(const char *query, uint64 queryId,
 		if (!stored)
 			goto done;
 
+		elog(LOG, "calling entry_alloc for '%.40s', cur hash size %ld",
+			 norm_query ? norm_query : query, 
+			 hash_get_num_entries(pgss_hash));
+
 		/* OK to create a new hashtable entry */
 		entry = entry_alloc(&key, query_offset, query_len, encoding,
 							jstate != NULL);
@@ -2160,6 +2164,8 @@ entry_dealloc(void)
 	nvictims = Max(10, i * USAGE_DEALLOC_PERCENT / 100);
 	nvictims = Min(nvictims, i);
 
+	elog(LOG, "entry_dealloc: zapping %d of %d victims", nvictims, i);
+
 	for (i = 0; i < nvictims; i++)
 	{
 		hash_search(pgss_hash, &entries[i]->key, HASH_REMOVE, NULL);