How long to rule, is too long to rule?

How long is too long to rule on a pending motion? In In re Hines, it was just under seven months from the first written request for a hearing: “[R]elator’s certified mandamus record includes copies of a motion for judgment nunc pro tunc dated August 24, 2018, and letter requests to the trial court dated September 27, 2018 and November 7, 2018 requesting a hearing on the August 24, 2018 motion for judgment nunc pro
tunc. The trial court has had a reasonable time in which to rule on the motion but has taken no action. Under this record, we conclude the trial court has violated its ministerial duty to rule on relator’s motion for judgment nunc pro tunc within a reasonable time.” No. 05-19-00243-CV (April 15, 2019) (mem. op.) (emphasis added).