Use num*20, chosen from empirical testing
@ -1790,7 +1790,7 @@ mdb_page_alloc(MDB_cursor *mc, int num, MDB_page **mp)
#else
enum { Paranoid = 0, Max_retries = INT_MAX /*infinite*/ };
#endif
int rc, retry = num;
int rc, retry = num * 20;
MDB_txn *txn = mc->mc_txn;
MDB_env *env = txn->mt_env;
pgno_t pgno, *mop = env->me_pghead;