On Tue, Oct 12, 2021 at 12:12:39PM -0600, Jens Axboe wrote: > It's expensive to browse the whole plug list for merge opportunities at > the IOPS rates that modern storage can do. For sequential IO, the one-hit > cached merge should suffice on fast drives, and for rotational storage the > IO scheduler will do a more exhaustive lookup based merge anyway. I don't really want to argue, but maybe some actual measurements to support the above claims would be useful in the commit log?
