>  int i = 32;
>
>  int
>  main(){ while (1) malloc(i); }
>
>
>  As long as i is in between 1 and 32, all memory is used up and all swap is used up, 
>and then the process is killed.
>
>  Again, when i > 32, all seems well.

dirty at least a byte of the data:

main(){ while (1) { char *p (char *) malloc(i); *p=0; }

if the memory has not been dirtied, the system does not need to remember
it when physical memory has been depleted.

--mark.

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