Re: [boost] Mutli index container - performance varation when erasinglarge amount of rows in different computers

From: Joaquin M Lopez Munoz (joaquin_at_[hidden])
Date: 2007-10-31 18:41:57

Avi Revivo <revivoavi <at> hotmail.com> writes:

[...]
> After dissecting i found out that the only problem is the the actual
> invocation of delete().
> 
> Code executed:
> **********************************************************
> 
>             int *arrayOfPointers[100000];
> 
> 	for(int i = 0; i < 100000; i++)
> 	{
> 		arrayOfPointers[i] = new int;
> 	}
> 
> 	for(int i = 0; i < 100000; i++)
> 	{
> 		delete arrayOfPointers[i];
> 	}
> 
> **********************************************************
> 
> Excuting the for loop that deletes takes 25 times slower then any other
> computer tested. The average time for a single delete operation is longer in
> by factor of 25.

Umm... Still it looks like a cache issue. Can you try doing the
deleteion in reverse order, from 99999 down to 0? Any difference,

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo