On Fri, Feb 26, 2021 at 07:47:55AM +1100, Dave Chinner wrote: > Sorry, I/O wait might matter for what? Think you have a SAS hard drive, WCE=0, typical queue depth of a few dozend commands. Before that we'd submit a bunch of iclogs, which are generally sequential except of course for the log wrap around case. The drive can now easily take all the iclogs and write them in one rotation. Now if we wait for the previous iclogs before submitting the commit_iclog we need at least one more additional full roundtrip.
