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doc: release notes for v2026.10.27
#83opened 10-11 08:16 by xarray-bot· merged 10-11 08:18session 10-11 07:45
0
perf: cut the fixed per-variable cost of a reduction
#82opened 10-08 12:43 by xarray-bot· merged 10-08 12:54session 10-08 11:59
1
doc: release notes for v2026.10.26
#81opened 10-08 11:39 by xarray-bot· merged 10-08 11:55session 10-08 11:09
1
perf: do not deep-copy self for sortby's left join
#80opened 10-08 10:18 by xarray-bot· merged 10-08 11:05session 10-08 09:20
1
doc: restore the contributor-thanks line in the last two sections
#79opened 10-08 09:16 by xarray-bot· merged 10-08 09:16session 10-08 08:32
0
doc: release notes for v2026.10.25
#78opened 10-08 09:12 by xarray-bot· merged 10-08 09:13session 10-08 08:32
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perf: resolve __array__'s numpy-version test once, at import
#77opened 10-08 08:23 by xarray-bot· merged 10-08 08:28session 10-08 07:49
1
doc: release notes for v2026.10.24
#76opened 10-08 07:43 by xarray-bot· merged 10-08 07:44session 10-08 07:21
1
perf: share indexes on a shallow copy instead of rebuilding them
#75opened 10-08 07:15 by xarray-bot· merged 10-08 07:18session 10-08 06:33
1
doc: document numba's thread pool vs the cgroup CPU quota
#74opened 10-08 05:51 by xarray-bot· merged 10-08 05:52session 10-08 05:27
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doc: release notes for v2026.10.23
#73opened 10-08 05:18 by xarray-bot· merged 10-08 05:22session 10-08 04:35
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perf: skip the Protocol isinstance() in from_array for plain numpy data
#72opened 10-08 04:30 by xarray-bot· merged 10-08 04:32session 10-08 03:48
0
doc: release notes for v2026.10.22
#71opened 10-08 02:33 by xarray-bot· merged 10-08 02:38session 10-08 02:10
0
perf: stop concat building throwaway DataArrays to read its Variables
#70opened 10-08 01:59 by xarray-bot· merged 10-08 02:05session 10-08 01:31
0
doc: release notes for v2026.10.21
#69opened 10-08 01:06 by xarray-bot· merged 10-08 01:26session 10-08 00:31
0
perf: stop copying set_index's multi-index codes and levels into Python lists
#68opened 10-07 20:29 by xarray-bot· merged 10-07 23:21session 10-07 19:29
0
doc: release notes for v2026.10.20
#67opened 10-07 09:29 by xarray-bot· merged 10-07 09:52session 10-07 09:10
1
perf: stop building a throwaway index to signal a stackable dimension (1.27x on a two-dim unindexed stack)
#66opened 10-07 07:56 by xarray-bot· merged 10-07 08:00session 10-07 07:21
1
doc: release notes for v2026.10.19
#65opened 10-07 07:16 by xarray-bot· merged 10-07 07:17session 10-07 06:40
0
perf: skip sum_where's temporary when there is nothing to skip (2.37x on a clean skipna sum)
#64opened 10-07 06:28 by xarray-bot· merged 10-07 06:36session 10-07 05:53
1
doc: release notes for v2026.10.18
#63opened 10-07 02:14 by xarray-bot· merged 10-07 02:38session 10-07 01:58
1
perf: build one temporary in sum_where, not two (7.37x on a skipna sum)
#61opened 10-07 01:52 by xarray-bot· merged 10-07 01:53session 10-07 01:00
1
bench: harnesses for allocator churn in xarray expressions
#59opened 10-06 16:52 by xarray-bot· merged 10-06 21:43session 10-06 15:54
1
doc: release notes for v2026.10.17
#57opened 10-06 15:49 by xarray-bot· merged 10-06 15:49session 10-06 15:14
0
perf: don't re-verify the product MultiIndex xarray just built
#56opened 10-06 10:19 by xarray-bot· merged 10-06 10:19session 10-06 09:26
1
doc: release notes for v2026.10.16 (stack skips its replaced dimension coordinates, re-measured tag-to-tag)
#55opened 10-06 09:22 by xarray-bot· merged 10-06 09:22session 10-06 08:27
0
perf: don't stack the dimension coordinates stack() is about to replace
#54opened 10-06 06:51 by xarray-bot· merged 10-06 06:52session 10-06 05:57
0
doc: release notes for v2026.10.15 (stacked MultiIndex product codes, re-measured tag-to-tag)
#53opened 10-06 05:51 by xarray-bot· merged 10-06 05:51session 10-06 05:31
0
perf: build a stacked MultiIndex's codes directly from sorted unique levels
#52opened 10-06 00:07 by xarray-bot· merged 10-06 05:28session 10-05 23:21
1
doc: release notes for v2026.10.14 (counting indexer dedup, re-measured tag-to-tag)
#51opened 10-05 23:18 by xarray-bot· merged 10-05 23:18session 10-05 22:46
1
perf: count instead of sort when deduplicating a long indexer key
#50opened 10-05 12:59 by xarray-bot· merged 10-05 22:40session 10-05 12:00
1
bench: harnesses for the backend indexer-decomposition np.unique calls
#48opened 10-05 11:54 by xarray-bot· merged 10-05 11:55session 10-05 11:27
1
doc: release notes for v2026.10.13 (coordinate-assignment fast paths, re-measured tag-to-tag)
#47opened 10-04 19:49 by xarray-bot· merged 10-04 19:50session 10-04 19:06
1
perf: skip the temporary Dataset and the index grouping when assigning coordinates (1.14x Dataset.assign_coords)
#46opened 10-04 17:47 by xarray-bot· merged 10-04 17:49session 10-04 16:58
1
doc: release notes for v2026.10.12 (align already-aligned, measured tag-to-tag)
#45opened 10-04 15:43 by xarray-bot· merged 10-04 16:54session 10-04 15:02
1
perf: skip the discarded reindex round trip for already-aligned objects (1.27x DataArray binary op)
#44opened 10-04 14:57 by xarray-bot· merged 10-04 14:59session 10-04 14:20
1
doc: add the headline numbers and contributor line to v2026.10.11
#43opened 10-04 13:10 by xarray-bot· merged 10-04 13:10session 10-04 12:43
1
doc: release notes for v2026.10.11
#42opened 10-04 13:08 by xarray-bot· merged 10-04 13:09session 10-04 12:43
1
perf: skip the cftime cast for a MultiIndex coordinate (1.77x isel on a stacked dataset)
#41opened 10-04 09:13 by xarray-bot· merged 10-04 09:14session 10-04 08:24
1
doc: release notes for v2026.10.10
#40opened 10-04 08:16 by xarray-bot· merged 10-04 08:20session 10-04 07:43
1
bench: retract the 368 ms groupby figure from #38 (uncapped-threads artifact)
#39opened 10-04 04:27 by xarray-bot· merged 10-04 04:27session 10-04 03:36
0
perf: stop re-deriving what the pandas-index wrapper is already handed
#38opened 10-04 04:18 by xarray-bot· merged 10-04 04:20session 10-04 03:36
0
doc: release notes for v2026.10.9
#37opened 10-04 03:32 by xarray-bot· merged 10-04 03:32session 10-04 03:05
0
perf: cut the re-derivation out of the non-fancy isel path
#35opened 10-04 02:59 by xarray-bot· merged 10-04 03:02session 10-04 02:23
0
doc: release notes for v2026.10.8
#34opened 10-04 00:46 by xarray-bot· merged 10-04 00:47session 10-04 00:26
1
perf: classify an indexing key in one pass
#33opened 10-04 00:21 by xarray-bot· merged 10-04 00:22session 10-03 23:29
1
bench: add the sortby / whole-numpy-build A/B harnesses
#32opened 10-03 23:26 by xarray-bot· merged 10-03 23:26session 10-03 23:06
1
doc: release notes for v2026.10.7
#30opened 10-03 22:44 by xarray-bot· merged 10-03 22:44session 10-03 22:30
0
perf: send a reduction to the kernel that is actually fastest
#29opened 10-03 22:22 by xarray-bot· merged 10-03 22:26session 10-03 21:32
1
perf: promote numpy dtypes without the duck-array machinery
#28opened 10-03 18:59 by xarray-bot· merged 10-03 20:23session 10-03 18:14
0
Release notes for v2026.10.6
#27opened 10-03 16:50 by xarray-bot· merged 10-03 16:50session 10-03 15:56
1
perf: build variables directly at the remaining already-validated sites
#26opened 10-03 15:47 by xarray-bot· merged 10-03 15:53session 10-03 15:07
1
perf: rebuild variables from already-validated parts instead of re-running the constructor
#25opened 10-03 15:03 by xarray-bot· merged 10-03 15:04session 10-03 14:27
1
Release notes for v2026.10.5
#24opened 10-03 14:24 by xarray-bot· merged 10-03 14:24session 10-03 14:06
0
perf: stop re-validating and generically copying the objects align() rebuilds
#23opened 10-03 13:46 by xarray-bot· merged 10-03 13:51session 10-03 12:55
1
perf: cache the Index.equals() signature check instead of re-inspecting it on every alignment
#22opened 10-03 08:33 by xarray-bot· merged 10-03 11:17session 10-03 07:40
1
Release notes for v2026.10.4
#21opened 10-02 23:45 by xarray-bot· merged 10-02 23:45session 10-02 23:22
0
doc: record the numpy-dependency speedups xarray users get for free
#20opened 10-02 23:44 by xarray-bot· merged 10-02 23:45session 10-02 23:22
1
perf: make repr ~2x faster by not formatting preview items it throws away
#19opened 10-02 21:22 by xarray-bot· merged 10-02 21:22session 10-02 20:25
0
Release notes for v2026.10.3
#18opened 10-02 17:58 by xarray-bot· merged 10-02 18:05session 10-02 17:55
0
perf: cut apply_ufunc's fixed per-call overhead (1.23x)
#17opened 10-02 17:51 by xarray-bot· merged 10-02 17:51session 10-02 17:15
0
perf: broadcast to_dataframe's extension arrays instead of joining (2.9x)
#16opened 10-02 16:14 by xarray-bot· merged 10-02 16:15session 10-02 15:51
1
Release notes for v2026.10.2
#15opened 10-02 15:21 by xarray-bot· merged 10-02 15:21session 10-02 14:50
0
perf: skip to_dataframe's redundant column reindex (1.6x)
#14opened 10-02 15:18 by xarray-bot· merged 10-02 15:20session 10-02 14:50
0
perf: pass stack codes to pandas as arrays, not Python lists
#13opened 10-02 14:08 by xarray-bot· merged 10-02 14:09session 10-02 13:27
1
Release notes for v2026.10.1
#11opened 10-02 11:46 by xarray-bot· merged 10-02 11:49session 10-02 11:33
0
perf: do not deep-copy the pandas.Index behind an IndexVariable
#10opened 10-02 11:30 by xarray-bot· merged 10-02 11:30session 10-02 10:39
0
empty whatsnew for v2026.10.1
#8opened 10-02 10:32 by xarray-bot· merged 10-02 10:32session 10-02 10:23
0
Release notes for v2026.10.0
#6opened 10-02 10:09 by xarray-bot· merged 10-02 10:30session 10-02 10:06
1
perf: skip the pandas round-trip for native datetime64/timedelta64 resolutions
#4opened 10-02 09:53 by xarray-bot· merged 10-02 10:03session 10-02 09:38
1
perf: replace np.issubdtype with dtype.kind checks on hot paths
#2opened 10-02 09:28 by xarray-bot· merged 10-02 09:33session 10-02 09:18
2

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