Reduce Memory Size of Roo::Excelx::Cell::* classes #449
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tgturner
approved these changes
Sep 13, 2018
lib/roo/excelx/cell/base.rb
Outdated
| @@ -4,10 +4,26 @@ class Cell | |||
| class Base | |||
| attr_reader :cell_type, :cell_value, :value | |||
|
|
|||
| # TODO: Extract it to module | |||
| def self.attr_reader_with_default(attr_hash) | |||
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I like this, interesting implementation to avoid creating more instance variables.
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@chopraanmol1 Looks like this needs to be rebased against master with the new changes from #434 |
One of the factor which determines the memsize of object is total no. of instance variables
Reducing no. of instance variables can also reduce memsize. To do so I've done two major things
1. Remove unnecessary instance_variable link
2. Created method attr_reader_with_default
i. With help of this method we can remove instance variable which are static accross class e.g. type and in somecases cell_type
ii. We can use better default to reduce memory e.g. style
Script
```
require 'roo'
require 'objspace'
coordinate = Roo::Excelx::Coordinate.new 1,1
base_date = Date.new(1899, 12, 30)
cells = []
formulas = [nil, "something"]#.reverse
styles = [1,2]#.reverse # Changing the sequence of this will result into different result
formulas.each do |formula|
styles.each do |style|
cells << ["formula=#{formula};style=#{style}", Roo::Excelx::Cell::String.new('Sample String',formula, style, nil, coordinate)]
cells << ["formula=#{formula};style=#{style}", Roo::Excelx::Cell::Boolean.new('1',formula, style,nil,coordinate)]
cells << ["formula=#{formula};style=#{style}", Roo::Excelx::Cell::Number.new('20.25', formula, [:numeric_or_formula, '%.2f'], style, nil, coordinate)]
cells << ["formula=#{formula};style=#{style}", Roo::Excelx::Cell::Date.new(5, formula, [:numeric_or_formula, 'yyyy-mm-ddd'], style,nil,base_date,coordinate)]
cells << ["formula=#{formula};style=#{style}", Roo::Excelx::Cell::DateTime.new(5.25, formula, [:numeric_or_formula, 'yyyy-mm-ddd hh:mm'], style,nil,base_date,coordinate)]
cells << ["formula=#{formula};style=#{style}", Roo::Excelx::Cell::Time.new(0.25, formula, [:numeric_or_formula, 'hh:mm'], style,nil,base_date,coordinate)]
cells << ["", Roo::Excelx::Cell::Empty.new(coordinate)]
end
end
cells = cells.collect{|variant,cell| ["#{cell.class}(#{variant})",cell] }.uniq(&:first).sort_by(&:first)
cells.each do |text, cell|
puts "#{text} => #{ObjectSpace.memsize_of(cell)} (#{cell.instance_variables.length})"
end
```
Result on Master
```
Roo::Excelx::Cell::Boolean(formula=;style=1) => 120 (8)
Roo::Excelx::Cell::Boolean(formula=;style=2) => 104 (8)
Roo::Excelx::Cell::Boolean(formula=something;style=1) => 104 (8)
Roo::Excelx::Cell::Boolean(formula=something;style=2) => 104 (8)
Roo::Excelx::Cell::Date(formula=;style=1) => 120 (9)
Roo::Excelx::Cell::Date(formula=;style=2) => 112 (9)
Roo::Excelx::Cell::Date(formula=something;style=1) => 112 (9)
Roo::Excelx::Cell::Date(formula=something;style=2) => 112 (9)
Roo::Excelx::Cell::DateTime(formula=;style=1) => 120 (9)
Roo::Excelx::Cell::DateTime(formula=;style=2) => 112 (9)
Roo::Excelx::Cell::DateTime(formula=something;style=1) => 112 (9)
Roo::Excelx::Cell::DateTime(formula=something;style=2) => 112 (9)
Roo::Excelx::Cell::Empty() => 96 (7)
Roo::Excelx::Cell::Number(formula=;style=1) => 120 (9)
Roo::Excelx::Cell::Number(formula=;style=2) => 112 (9)
Roo::Excelx::Cell::Number(formula=something;style=1) => 112 (9)
Roo::Excelx::Cell::Number(formula=something;style=2) => 112 (9)
Roo::Excelx::Cell::String(formula=;style=1) => 120 (8)
Roo::Excelx::Cell::String(formula=;style=2) => 104 (8)
Roo::Excelx::Cell::String(formula=something;style=1) => 104 (8)
Roo::Excelx::Cell::String(formula=something;style=2) => 104 (8)
Roo::Excelx::Cell::Time(formula=;style=1) => 120 (10)
Roo::Excelx::Cell::Time(formula=;style=2) => 120 (10)
Roo::Excelx::Cell::Time(formula=something;style=1) => 120 (10)
Roo::Excelx::Cell::Time(formula=something;style=2) => 120 (10)
```
Result after this patch
```
Roo::Excelx::Cell::Boolean(formula=;style=1) => 40 (3)
Roo::Excelx::Cell::Boolean(formula=;style=2) => 80 (4)
Roo::Excelx::Cell::Boolean(formula=something;style=1) => 88 (4)
Roo::Excelx::Cell::Boolean(formula=something;style=2) => 80 (5)
Roo::Excelx::Cell::Date(formula=;style=1) => 80 (5)
Roo::Excelx::Cell::Date(formula=;style=2) => 96 (6)
Roo::Excelx::Cell::Date(formula=something;style=1) => 104 (6)
Roo::Excelx::Cell::Date(formula=something;style=2) => 96 (7)
Roo::Excelx::Cell::DateTime(formula=;style=1) => 80 (5)
Roo::Excelx::Cell::DateTime(formula=;style=2) => 96 (6)
Roo::Excelx::Cell::DateTime(formula=something;style=1) => 104 (6)
Roo::Excelx::Cell::DateTime(formula=something;style=2) => 96 (7)
Roo::Excelx::Cell::Empty() => 40 (1)
Roo::Excelx::Cell::Number(formula=;style=1) => 80 (5)
Roo::Excelx::Cell::Number(formula=;style=2) => 96 (6)
Roo::Excelx::Cell::Number(formula=something;style=1) => 104 (6)
Roo::Excelx::Cell::Number(formula=something;style=2) => 96 (7)
Roo::Excelx::Cell::String(formula=;style=1) => 40 (3)
Roo::Excelx::Cell::String(formula=;style=2) => 80 (4)
Roo::Excelx::Cell::String(formula=something;style=1) => 88 (4)
Roo::Excelx::Cell::String(formula=something;style=2) => 80 (5)
Roo::Excelx::Cell::Time(formula=;style=1) => 96 (6)
Roo::Excelx::Cell::Time(formula=;style=2) => 104 (7)
Roo::Excelx::Cell::Time(formula=something;style=1) => 120 (7)
Roo::Excelx::Cell::Time(formula=something;style=2) => 104 (8)
```
chopraanmol1
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@chopraanmol1 Great changes here! |
netbsd-srcmastr
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Jan 20, 2019
pkgsrc change: add "USE_LANGUAGES= # none". ## [2.8.0] 2019-01-18 ### Fixed - Fixed inconsistent column length for CSV [375](roo-rb/roo#375) - Fixed formatted_value with `%` for Excelx [416](roo-rb/roo#416) - Improved Memory consumption and performance [434](roo-rb/roo#434) [449](roo-rb/roo#449) [454](roo-rb/roo#454) [456](roo-rb/roo#456) [458](roo-rb/roo#458) [462](roo-rb/roo#462) [466](roo-rb/roo#466) - Accept both Transitional and Strict Type for Excelx's worksheets [441](roo-rb/roo#441) - Fixed ruby warnings [442](roo-rb/roo#442) [476](roo-rb/roo#476) - Restore support for URL as file identifier for CSV [462](roo-rb/roo#462) - Fixed missing location for Excelx's links [482](roo-rb/roo#482) ### Changed / Added - Drop support for ruby 2.2.x and lower - Updated rubyzip version for fixing security issue. Now minimal version is 1.2.1 - Roo::Excelx::Coordinate now inherits Array [458](roo-rb/roo#458) - Improved Roo::HeaderRowNotFoundError exception's message [461](roo-rb/roo#461) - Added `empty_cell` option which by default disable allocation for Roo::Excelx::Cell::Empty [464](roo-rb/roo#464) - Added support for variable number of decimals for Excelx's formatted_value [387](roo-rb/roo#387) - Added `disable_html_injection` option to disable html injection for shared string in `Roo::Excelx` [392](roo-rb/roo#392) - Added image extraction for Excelx [414](roo-rb/roo#414) [397](roo-rb/roo#397) - Added support for `1e6` as scientific notation for Excelx [433](roo-rb/roo#433) - Added support for Integer as 0 based index for Excelx's `sheet_for` [455](roo-rb/roo#455) - Extended `no_hyperlinks` option for non streaming Excelx methods [459](roo-rb/roo#459) - Added `empty_cell` option to disable Roo::Excelx::Cell::Empty allocation for Excelx [464](roo-rb/roo#464) - Added support for Integer with leading zero for Roo:Excelx [479](roo-rb/roo#479) - Refactored Excelx code [453](roo-rb/roo#453) [477](roo-rb/roo#477) [483](roo-rb/roo#483) [484](roo-rb/roo#484) ### Deprecations - Roo::Excelx::Sheet#present_cells is deprecated [454](roo-rb/roo#454) - Roo::Utils.split_coordinate is deprecated [458](roo-rb/roo#458) - Roo::Excelx::Cell::Base#link is deprecated [457](roo-rb/roo#457)
aravindm
pushed a commit
to chobiwa/roo
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Jun 18, 2019
One of the factor which determines the memsize of object is total no. of instance variables Reducing no. of instance variables can also reduce memsize. To do so I've done two major things 1. Remove unnecessary instance_variable link 2. Created method attr_reader_with_default i. With help of this method we can remove instance variable which are static accross class e.g. type and in somecases cell_type ii. We can use better default to reduce memory e.g. style
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One of the factor which determines the memsize of object is total no. of instance variables
Reducing no. of instance variables can also reduce memsize. To do so I've done two major things
i. With help of this method we can remove instance variable which are static accross class e.g. type and in somecases cell_type
ii. We can use better default to reduce memory e.g. style
Script
Result on Master
Result after this patch
NOTE: As of now it is Proof of Concept and is currently WIP. Also many factors effect memsize due to which result will vary by simply changing the sequence it is running in. But overall it will reduce allocated and retained memory.