In C. Itoh & Co. v. Jordan Internat. Co. (1977) 552 F.2d 1228, the district court has no discretion to refuse to enforce an arbitration provision on the ground that sound judicial administration requires resolution of the entire lawsuit in a single forum when disputes between some parties are not arbitrable. Under the FAA, the decision whether to stay litigation pending arbitration may be based only on issues relating to the making and performance of the agreement to arbitrate. (552 F.2d at p. 1231.) "Considerations of judicial economy bear no relation to 'the making and performance of an agreement to arbitrate,' and to permit a district court to deny a stay pending arbitration based on such discretionary considerations would, in our opinion, frustrate the strong federal policy in favor of arbitration which is expressed in the Federal Arbitration Act as interpreted by the Supreme Court." (Ibid.)