implement dmu_read_uio_dbuf() to improve cached read performance
On a synthetic benchmark of cached reads of 8k blocks, lots of time is spent
holding the dnode. We should implement and use a dmu_read_uio_dbuf() that
takes the dbuf rather than the object ID, analogous to dmu_write_uio_dbuf().
Tests show that this results in a ~10% performance improvement.
Updated by Electric Monk about 7 years ago
- Status changed from New to Closed
- % Done changed from 0 to 100
commit f8554bb92be6be88a684bea58293b41a6168a538 Author: Matthew Ahrens <firstname.lastname@example.org> Date: 2014-10-07T18:10:05.000Z 5175 implement dmu_read_uio_dbuf() to improve cached read performance Reviewed by: Adam Leventhal <email@example.com> Reviewed by: Alex Reece <firstname.lastname@example.org> Reviewed by: George Wilson <email@example.com> Reviewed by: Richard Elling <firstname.lastname@example.org> Approved by: Robert Mustacchi <email@example.com>