Keenan Brock kbrock

## mermaid.md

      
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                kbrock
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              July 15, 2020 18:52
            
              
                Vmware folder relationships drawn in mermaid
              
          
    2 renderings of a vmware dc folder hierarchy
Full diagram

[](https://mermaid-js.github.io/mermaid-live-editor/#/edit/eyJjb2RlIjoiZmxvd2NoYXJ0IExSXG5cbmRmW1wiREMgRiAoWSlcIl1cbmRjW1wiREMgKFkpXCJdXG5oZltcIkggRiAoWSlcIl1cbnZmW1wiVm0gRiAoQilcIl1cbmNbXCJDbHVzdGVyXCJdXG5oW1wiSG9zdFwiXVxudm0oXCJWbVwiKVxuc

  
## code.txt

relationships = Relationship.where(relationship: 'genealogy', resource_type: 'VmOrTemplate').select(:id, :resource_id, :ancestry).to_a
rel_by_rel_id = relationships.index_by(:id) # relationship => resource_id
rel_by_vm_id = relationships.index_by(:resource_id) # resource_id => ancestry

Vm.where(:id => Relationship.select(:resource_id)).each_in_batches do |vm|
  ancestry = rel_by_vm_id[vm.id].ancestry.split("/").map { |rel_id| rel_by_rel_id[rel_id].resource_id.to_s }.join("/")
  vm.update_attribute(:ancestry => ancestry)
end

## a_invoke.bash
curl -X POST http://admin:smartvm@localhost:3000/api/service_catalogs/#{id}/service_templates/1 -d '{"action" : "order"}'

## 0_proposal.md

      
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                kbrock
                / 0_proposal.md
            
            
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              May 3, 2020 14:07
            
              
                keyboard info.json layout ideas for qmk
              
          
    The [original] is modified in the following ways:

tweaked options to be {} not [] for json syntax reasons
added "R" for demonstrative purposes

Here are a few ideas. I tried to keep them as independent as possible:

assume width, height, matrix, and display
remove replaces
4. condense options want to keep nodes separate.
assume, replaces, condense


## compare_vs_include.rb
#!/usr/bin/env ruby

require "benchmark/ips"
require "date"

BEGIN_OF_JULY = Date.new(2015, 7, 1)
END_OF_JULY = Date.new(2015, 7, 31)
DAY_IN_JULY = Date.new(2015, 7, 15)
RANGE = BEGIN_OF_JULY..END_OF_JULY

## _results.md

      
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                kbrock
                / _results.md
            
            
              Created
              May 30, 2018 14:22
            
              
                Compare string to array
              
          
method
nil
speed
str
speed


?split:[]
9,761,148.9 i/s

2,869,972.9 i/s
3.40x


&.split||[]
9,271,343.0 i/s
same
2,879,248.1 i/s
3.39x


&&split||[]
9,096,687.7 i/s
same
2,941,303.8 i/s
3.32x


to_s.split
4,288,858.0 i/s
2.28x
2,822,293.7 i/s
3.46x


ruby -v


## _results.md

      
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                kbrock
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              May 30, 2018 14:10
            
              
                Comparing Array blank vs empty 
              
          
    ruby 2.4.2p198 (2017-09-14 revision 59899) [x86_64-darwin16]


nil
slower
empty
slower
full
slower


x&.empty?
11985357.7 i/s
same
11617138.6 i/s
same
11247144.5 i/s
same


x.blank?
9909235.8 i/s
1.21x
10488507.9 i/s
1.14x
10418916.8 i/s
1.15x


x.nil? || x.empty?
10194622.1 i/s
1.18x
9584369.0 i/s
1.25x
9667811.7 i/s
1.24x


x.try!(:empty?)
5437472.5 i/s
2.20x
3493090.9 i/s
3.43x
3523153.2 i/s
3.40x


## _results.md

      
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                kbrock
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              April 26, 2018 18:51
            
              
                Comparing performance implementation of determining whether a field is an integer (for ancestry
              
          
    note: in the tests, we are setting a different variable @x than the guard clause @x2.
I tested a terciary ?: vs the guard clause return if defined?() and they were about the same for pass and fail case


test
int i/s
slower
text i/s
slower


eq2
6,315,053.7 i/s
same
6,323,409.7 i/s
base


neq2
6,281,137.2 i/s
same
3,707,761.0 i/s
1.71x


eq
5,978,924.2 i/s
same
4,572,438.8 i/s
1.38x


include
4,368,299.8 i/s
1.45x
4,349,531.4 i/s
1.45x


neq
4,194,756.5 i/s
1.51x
4,170,358.7 i/s
1.52x


## 0README.md

      
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                kbrock
                / 0README.md
            
            
              Created
              December 11, 2017 17:03
            
              
                Comparing 
              
          
    Looking at the difference between using ActiveSupport::Notification, and rolling our own metrics counters.
When logging, Notifications are 66% slower than manually adding the metrics code.
The metrics code is actually 50% slower when not logging the results (no subscriber).
Having no subscriber does speed up performance for all the cases.
The difference for timing for payload is probably due to allocations.
Having a fixed payload ended up being equivalent to the no payload case.
This is a reminder for us to pay attention to what we pass in the payload.

  
## answer.md

      
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                kbrock
                / answer.md
            
            
              Last active
              August 29, 2017 13:44
                — forked from aishfenton/serializer_benchmarks.rb
            
              
                Performance comparison of different ruby serializer methods
              
          
gem


Json oj
40.4 i/s


MessagePack
38.3 i/s
same


binary json
22.0 i/s
1.84x  slower


Json yajl
19.0 i/s
2.13x  slower


ruby json
15.6 i/s
2.59x  slower


ruby marshal
13.9 i/s
2.90x  slower


ruby yaml
0.4 i/s
111.99x  slower


Yaml Psych
0.4 i/s
112.09x slower

	relationships = Relationship.where(relationship: 'genealogy', resource_type: 'VmOrTemplate').select(:id, :resource_id, :ancestry).to_a
	rel_by_rel_id = relationships.index_by(:id) # relationship => resource_id
	rel_by_vm_id = relationships.index_by(:resource_id) # resource_id => ancestry

	Vm.where(:id => Relationship.select(:resource_id)).each_in_batches do \|vm\|
	ancestry = rel_by_vm_id[vm.id].ancestry.split("/").map { \|rel_id\| rel_by_rel_id[rel_id].resource_id.to_s }.join("/")
	vm.update_attribute(:ancestry => ancestry)
	end
	#!/usr/bin/env ruby

	require "benchmark/ips"
	require "date"

	BEGIN_OF_JULY = Date.new(2015, 7, 1)
	END_OF_JULY = Date.new(2015, 7, 31)
	DAY_IN_JULY = Date.new(2015, 7, 15)
	RANGE = BEGIN_OF_JULY..END_OF_JULY
method	nil	speed	str	speed
`?split:[]`	9,761,148.9 i/s		2,869,972.9 i/s	3.40x
`&.split\|\|[]`	9,271,343.0 i/s	same	2,879,248.1 i/s	3.39x
`&&split\|\|[]`	9,096,687.7 i/s	same	2,941,303.8 i/s	3.32x
`to_s.split`	4,288,858.0 i/s	2.28x	2,822,293.7 i/s	3.46x
	nil	slower	empty	slower	full	slower
`x&.empty?`	11985357.7 i/s	same	11617138.6 i/s	same	11247144.5 i/s	same
`x.blank?`	9909235.8 i/s	1.21x	10488507.9 i/s	1.14x	10418916.8 i/s	1.15x
`x.nil? \|\| x.empty?`	10194622.1 i/s	1.18x	9584369.0 i/s	1.25x	9667811.7 i/s	1.24x
`x.try!(:empty?)`	5437472.5 i/s	2.20x	3493090.9 i/s	3.43x	3523153.2 i/s	3.40x
test	int i/s	slower	text i/s	slower
eq2	6,315,053.7 i/s	same	6,323,409.7 i/s	base
neq2	6,281,137.2 i/s	same	3,707,761.0 i/s	1.71x
eq	5,978,924.2 i/s	same	4,572,438.8 i/s	1.38x
include	4,368,299.8 i/s	1.45x	4,349,531.4 i/s	1.45x
neq	4,194,756.5 i/s	1.51x	4,170,358.7 i/s	1.52x
gem
Json oj	40.4 i/s
MessagePack	38.3 i/s	same
binary json	22.0 i/s	1.84x slower
Json yajl	19.0 i/s	2.13x slower
ruby json	15.6 i/s	2.59x slower
ruby marshal	13.9 i/s	2.90x slower
ruby yaml	0.4 i/s	111.99x slower
Yaml Psych	0.4 i/s	112.09x slower