diff options
| author | Don Brady <[email protected]> | 2017-01-12 12:52:56 -0700 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2017-01-12 11:52:56 -0800 |
| commit | 4e21fd060a567a9c8a1bd0e640985412181c1e33 (patch) | |
| tree | 622424c5f98ac43cd93d8af221775a77df161856 /module/zfs/space_map.c | |
| parent | 5727b00e06a4208a7040489d582f13bc3c183384 (diff) | |
OpenZFS 7303 - dynamic metaslab selection
This change introduces a new weighting algorithm to improve
metaslab selection. The new weighting algorithm relies on the
SPACEMAP_HISTOGRAM feature. As a result, the metaslab weight
now encodes the type of weighting algorithm used (size-based
vs segment-based).
Porting Notes: The metaslab allocation tracing code is conditionally
removed on linux (dependent on mdb debugger).
Authored by: George Wilson <[email protected]>
Reviewed by: Alex Reece <[email protected]>
Reviewed by: Chris Siden <[email protected]>
Reviewed by: Dan Kimmel <[email protected]>
Reviewed by: Matthew Ahrens <[email protected]>
Reviewed by: Paul Dagnelie <[email protected]>
Reviewed by: Pavel Zakharov [email protected]
Reviewed by: Prakash Surya <[email protected]>
Reviewed by: Don Brady <[email protected]>
Reviewed-by: Brian Behlendorf <[email protected]>
Ported-by: Don Brady <[email protected]>
OpenZFS-issue: https://www.illumos.org/issues/7303
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/d5190931bd
Closes #5404
Diffstat (limited to 'module/zfs/space_map.c')
| -rw-r--r-- | module/zfs/space_map.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/module/zfs/space_map.c b/module/zfs/space_map.c index 87e90f219..961f23b0e 100644 --- a/module/zfs/space_map.c +++ b/module/zfs/space_map.c @@ -173,7 +173,6 @@ space_map_histogram_add(space_map_t *sm, range_tree_t *rt, dmu_tx_t *tx) dmu_buf_will_dirty(sm->sm_dbuf, tx); ASSERT(space_map_histogram_verify(sm, rt)); - /* * Transfer the content of the range tree histogram to the space * map histogram. The space map histogram contains 32 buckets ranging |