Alexander Motin 1af240f3b5 Add separate aggregation limit for non-rotating media ... Before sequential scrub patches ZFS never aggregated I/Os above 128KB. Sequential scrub bumped that to 1MB, supposedly to reduce number of head seeks for spinning disks. But for SSDs it makes little to no sense, especially on FreeBSD, where due to MAXPHYS limitation device will likely still see bunch of 128KB I/Os instead of one large. Having more strict aggregation limit for SSDs allows to avoid allocation of large memory buffer and copy to/from it, that is a serious problem when throughput reaches gigabytes per second. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Closes #8494		2019-03-13 12:00:10 -07:00
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Makefile.am	Update build system and packaging	2018-05-29 16:00:33 -07:00
spl-module-parameters.5	Update spl module parameters man5 with missing parameter details	2017-10-27 15:46:34 -07:00
vdev_id.conf.5	Add enclosure_symlinks option to vdev_id	2018-12-14 17:27:49 -08:00
zfs-events.5	Add zpool status -s (slow I/Os) and -p (parseable)	2018-11-08 16:47:24 -08:00
zfs-module-parameters.5	Add separate aggregation limit for non-rotating media	2019-03-13 12:00:10 -07:00
zpool-features.5	Add bookmark v2 on-disk feature	2019-03-13 10:58:39 -07:00