Grouping tracks for destaging

摘要

Tracks are selected for destaging from a least recently used (LRU) list and the selected tracks are moved to a destaging wait list. The selected tracks are grouped and destaged from the destaging wait list.

主权项

1. A method for grouping tracks for destaging by a processor device in a computing environment, the method comprising:
selecting tracks for destaging from a least recently used (LRU) list and moving the selected tracks to a destaging wait list; grouping and destaging the selected tracks from the destaging wait list; performing a destaging scan task by traversing the LRU list and locating those tracks eligible for destaging; selecting one of the selected tracks from the destaging wait list and grouping the selected tracks for destaging; locating a first track and a last track from the group of selected tracks of the destaging wait list; commencing the destaging from the first track in the group of selected tracks; and adding a track to the group of selected tracks if the track is one of modified and located in a cache, otherwise:
moving to a next one of the selected tracks in the group of selected tracks.