GitHub / pandas-dev/pandas issues and pull requests
Labelled with: Performance
#21880 - Slowdown of str(record) of DataFrame.to_records() method
Issue -
State: closed - Opened by gitrus over 7 years ago
- 2 comments
Labels: Performance, Constructors
#20849 - Memory leakage when concatting list of dataframes
Issue -
State: open - Opened by ghost over 7 years ago
- 3 comments
Labels: Performance, Reshaping
#20803 - High Memory Usage when Concatenating Partially Indexed Series to Multiindexed Dataframe
Issue -
State: closed - Opened by cyniphile over 7 years ago
- 1 comment
Labels: Indexing, Performance, MultiIndex
#19958 - Concat slow when frames indexed separately
Issue -
State: closed - Opened by jeremywhelchel over 7 years ago
- 11 comments
Labels: Performance, Reshaping
#17754 - DatetimeIndex selection with .loc is orders of magnitude slower than [] on ordered frame
Issue -
State: closed - Opened by tdpetrou about 8 years ago
- 8 comments
Labels: Indexing, Performance, Error Reporting
#17479 - DatetimeIndex plot converter performance
Issue -
State: closed - Opened by jondoesntgit about 8 years ago
- 5 comments
Labels: Visualization, Performance
#16440 - More memory efficient hash tables
Issue -
State: closed - Opened by rohanp over 8 years ago
- 10 comments
Labels: Enhancement, Performance
#16310 - Documentation on Performance considerations
Issue -
State: closed - Opened by Dr-Irv over 8 years ago
- 4 comments
Labels: Docs, Performance, good first issue
#15364 - Huge performance hit in get_indexer_non_unique
Issue -
State: closed - Opened by horta almost 9 years ago
- 8 comments
Labels: Indexing, Performance, MultiIndex
#15068 - Pre-compute the size of an outer merge and raise MemoryError if merge will be too large
Issue -
State: closed - Opened by mproffitt almost 9 years ago
- 9 comments
Labels: Enhancement, Performance, Reshaping, Error Reporting
#14775 - Severe performance problems with multi-index joins
Issue -
State: closed - Opened by SReicheltPTV almost 9 years ago
- 5 comments
Labels: Performance, Reshaping, MultiIndex
#14315 - to_sql function takes forever to insert in oracle database
Issue -
State: closed - Opened by rajattjainn about 9 years ago
- 11 comments
Labels: Performance, IO SQL
#13457 - PERF: large subset of block cast
Issue -
State: closed - Opened by chris-b1 over 9 years ago
- 2 comments
Labels: Indexing, Performance, Internals
#12562 - PERF: use lib.write_csv_rows for encoded data when writing to csv
Issue -
State: closed - Opened by jreback over 9 years ago
- 5 comments
Labels: Performance, Unicode, IO CSV
#12430 - Cython-optimized expanding apply transformations
Issue -
State: closed - Opened by bschreck almost 10 years ago
- 7 comments
Labels: Enhancement, Performance, Apply, Window
#12272 - ENH: Make use of RangeIndex in DatetimeIndex
Issue -
State: closed - Opened by kawochen almost 10 years ago
- 5 comments
Labels: Timeseries, Performance, Index
#12257 - use_inf_as_null makes fillna extremely slow
Issue -
State: closed - Opened by Winand almost 10 years ago
- 4 comments
Labels: Missing-data, Performance
#12093 - ENH: allow multiple rolling quantiles in one pass
Issue -
State: closed - Opened by StephenKappel almost 10 years ago
- 9 comments
Labels: Enhancement, Performance, Window, quantile
#11355 - PERF: refactor ExcelFormatter
Issue -
State: closed - Opened by chris-b1 about 10 years ago
- 9 comments
Labels: Performance, IO Excel
#11026 - DataFrame fast search
Issue -
State: closed - Opened by alzmcr about 10 years ago
- 16 comments
Labels: Indexing, Performance
#10554 - High memory usage pivot_table
Issue -
State: closed - Opened by cangermueller over 10 years ago
- 2 comments
Labels: Performance, Reshaping
#10310 - PERF: HDFStore iterator can use slices to represent iterator when where=None
Issue -
State: closed - Opened by jreback over 10 years ago
- 1 comment
Labels: Enhancement, Performance, IO HDF5
#9969 - Poor read_csv performance on file with many columns
Issue -
State: closed - Opened by tloredo over 10 years ago
- 3 comments
Labels: Performance, IO CSV
#9716 - Pandas's memory management
Issue -
State: closed - Opened by borisRa over 10 years ago
- 18 comments
Labels: Performance
#9510 - Support pad/backfill/nearest reindexing even for unsorted indexes by storing a sorted index?
Issue -
State: closed - Opened by shoyer almost 11 years ago
- 2 comments
Labels: Enhancement, Indexing, Performance
#9365 - Use KDTrees to support nearest neighbor queries/joins on MultiIndexes?
Issue -
State: closed - Opened by shoyer almost 11 years ago
- 5 comments
Labels: Enhancement, Indexing, Performance
#9211 - drop_duplicates() on a float64 type column containing NaN values will cause CPU 100% occupied forever
Issue -
State: closed - Opened by scratdata almost 11 years ago
- 6 comments
Labels: Performance, duplicated
#8953 - Use multi-row inserts for massive speedups on to_sql over high latency connections
Issue -
State: closed - Opened by maxgrenderjones almost 11 years ago
- 49 comments
Labels: Performance, IO SQL
#8524 - Klib upgrade (factorizing performance increase)
Issue -
State: open - Opened by CarstVaartjes about 11 years ago
- 19 comments
Labels: Performance
#7282 - PERF: pandas import is too slow
Issue -
State: closed - Opened by mpenning over 11 years ago
- 53 comments
Labels: Performance
#6706 - PERF: Cython or C implementation for reading fixed-width files (read_fwf)
Issue -
State: closed - Opened by stevenmanton over 11 years ago
- 4 comments
Labels: Performance, IO Fixed Width
#4517 - Add PyExcelerate as Excel Writer Engine
Issue -
State: closed - Opened by rhstanton over 12 years ago
- 31 comments
Labels: IO Data, Performance, IO Excel