[Interest] Qtcontainerbench std::vector vs QVector

[Constantin Makshin]

"vector" branch is identical to "master".

On 07/22/2015 10:20 PM, Gunnar Roth wrote:
> Hi,
> for whom it may concern i post my results for vector iterating using
> iterator and index plus insert via push_back.
> 
> the test code is at  https://github.com/gunrot/qtcontainerbench in
> branch vector. it runs over N containers where
> N=min(1,100000/countofelements)
> on my OS X 10.10.5 xcode 3.6 13 inch retina apple notebook(2013)
> 
> 
> Commandline was 
> LANG=C ./qtcontainerbench  testCase_iterate_vector -csv
> 
> Time is in ms.
> 
> 
> 
> stdvector_fwd_it               
> 	
> 5
> 	
> 0,13671875
> stdvector_fwd_it               
> 	
> 10
> 	
> 0,12890625
> stdvector_fwd_it               
> 	
> 20
> 	
> 0,126953125
> stdvector_fwd_it               
> 	
> 40
> 	
> 0,099609375
> stdvector_fwd_it               
> 	
> 50
> 	
> 0,083984375
> stdvector_fwd_it               
> 	
> 80
> 	
> 0,095703125
> stdvector_fwd_it               
> 	
> 100
> 	
> 0,0859375
> stdvector_fwd_it               
> 	
> 1000
> 	
> 0,072265625
> stdvector_fwd_it               
> 	
> 10000
> 	
> 0,08203125
> stdvector_fwd_it               
> 	
> 100000
> 	
> 0,076171875
> stdvector_fwd_it               
> 	
> 1000000
> 	
> 1,078125
> QVector_fwd_it                 
> 	
> 5
> 	
> 0,23046875
> QVector_fwd_it                 
> 	
> 10
> 	
> 0,20703125
> QVector_fwd_it                 
> 	
> 20
> 	
> 0,23828125
> QVector_fwd_it                 
> 	
> 40
> 	
> 0,234375
> QVector_fwd_it                 
> 	
> 50
> 	
> 0,19921875
> QVector_fwd_it                 
> 	
> 80
> 	
> 0,22265625
> QVector_fwd_it                 
> 	
> 100
> 	
> 0,18359375
> QVector_fwd_it                 
> 	
> 1000
> 	
> 0,1640625
> QVector_fwd_it                 
> 	
> 10000
> 	
> 0,17578125
> QVector_fwd_it                 
> 	
> 100000
> 	
> 0,18359375
> QVector_fwd_it                 
> 	
> 1000000
> 	
> 1,65625
> stdvector_fwd_idx              
> 	
> 5
> 	
> 0,140625
> stdvector_fwd_idx              
> 	
> 10
> 	
> 0,107421875
> stdvector_fwd_idx              
> 	
> 20
> 	
> 0,09375
> stdvector_fwd_idx              
> 	
> 40
> 	
> 0,107421875
> stdvector_fwd_idx              
> 	
> 50
> 	
> 0,0947265625
> stdvector_fwd_idx              
> 	
> 80
> 	
> 0,107421875
> stdvector_fwd_idx              
> 	
> 100
> 	
> 0,1044921875
> stdvector_fwd_idx              
> 	
> 1000
> 	
> 0,0771484375
> stdvector_fwd_idx              
> 	
> 10000
> 	
> 0,0830078125
> stdvector_fwd_idx              
> 	
> 100000
> 	
> 0,080078125
> stdvector_fwd_idx              
> 	
> 1000000
> 	
> 1,03125
> QVector_fwd_idx                
> 	
> 5
> 	
> 0,203125
> QVector_fwd_idx                
> 	
> 10
> 	
> 0,21484375
> QVector_fwd_idx                
> 	
> 20
> 	
> 0,21484375
> QVector_fwd_idx                
> 	
> 40
> 	
> 0,189453125
> QVector_fwd_idx                
> 	
> 50
> 	
> 0,166015625
> QVector_fwd_idx                
> 	
> 80
> 	
> 0,16796875
> QVector_fwd_idx                
> 	
> 100
> 	
> 0,15234375
> QVector_fwd_idx                
> 	
> 1000
> 	
> 0,146484375
> QVector_fwd_idx                
> 	
> 10000
> 	
> 0,1796875
> QVector_fwd_idx                
> 	
> 100000
> 	
> 0,14453125
> QVector_fwd_idx                
> 	
> 1000000
> 	
> 1,75
> stdvector_pushback             
> 	
> 5
> 	
> 14
> stdvector_pushback             
> 	
> 10
> 	
> 11,25
> stdvector_pushback             
> 	
> 20
> 	
> 9,625
> stdvector_pushback             
> 	
> 40
> 	
> 7,625
> stdvector_pushback             
> 	
> 50
> 	
> 7
> stdvector_pushback             
> 	
> 80
> 	
> 6,75
> stdvector_pushback             
> 	
> 100
> 	
> 6,4375
> stdvector_pushback             
> 	
> 1000
> 	
> 5,4375
> stdvector_pushback             
> 	
> 10000
> 	
> 5,4375
> stdvector_pushback             
> 	
> 100000
> 	
> 5,6875
> stdvector_pushback             
> 	
> 1000000
> 	
> 55
> QVector_pushback               
> 	
> 5
> 	
> 14
> QVector_pushback               
> 	
> 10
> 	
> 14,5
> QVector_pushback               
> 	
> 20
> 	
> 13,75
> QVector_pushback               
> 	
> 40
> 	
> 11,625
> QVector_pushback               
> 	
> 50
> 	
> 10,375
> QVector_pushback               
> 	
> 80
> 	
> 11,875
> QVector_pushback               
> 	
> 100
> 	
> 10,125
> QVector_pushback               
> 	
> 1000
> 	
> 9,875
> QVector_pushback               
> 	
> 10000
> 	
> 10
> QVector_pushback               
> 	
> 100000
> 	
> 10,75
> QVector_pushback               
> 	
> 1000000
> 	
> 97
> 
> 
> 
> My conclusion from this is to use std::vector. Only if i really need the
> implicit sharing property , because i cannot move, i would choose QVector.
> 
> Regards,
> Gunnar Roth

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