MEMORANDUM **

Robert P. Benyamini, a California state prisoner, appeals pro se from the district court’s judgment dismissing, without prejudice, his 42 U.S.C. § 1983 action alleging unconstitutional use of excessive force and retaliation. We have jurisdiction under 28 U.S.C. § 1291. We review for an abuse of *723 discretion the district court’s dismissal for failure to prosecute. Ash v. Cvetkov, 739 F.2d 493, 495 (9th Cir. 1984). We affirm.

The district court did not abuse its discretion by dismissing the action because Benyamini failed to effect service of process against defendants or file an amended complaint, after being warned that failure to do so would result in dismissal. See id. at 496-97 (listing factors to consider before dismissing an action for lack of prosecution and explaining that “[a] relatively brief period of delay is sufficient to justify” a dismissal without prejudice for failure to prosecute).

Benyamini’s remaining contentions are unpersuasive.

Benyamini’s requests in his letter received on November 23, 2011 are denied.

AFFIRMED.