Patent ID: 9632945
Date: 2017-04-25
CPC Classifications: G06F

Claim:
1. A method for destage grouping for sequential fast write tracks by a processor device in a computing environment, the method comprising: metering an amount of sequential fast write (SFW) tracks by providing an adjustable threshold for performing a destage scan that moves the SFW tracks from a SFW least recently used (LRU) list to a destaging wait list (DWL); setting priorities for the destaging of the SFW tracks from the DWL; setting the adjustable threshold to a maximum threshold as an Nth percentage of an overall number of the SFW tracks allowed; commencing a monitoring operation using the maximum threshold for the metering; setting a bit at a predetermined time interval if there are no new SFW writes and decrementing the maximum threshold by a predetermined Xth percentage, wherein the Xth percentage is lower than the Nth percentage and the decrementing ceases at a zero threshold; and resetting the bit if the bit is set and incrementing the adjustable threshold by the predetermined Nth percentage.