14 Jul
2010
14 Jul
'10
10:47 p.m.
On 07/14/2010 01:34 PM, Todd Denniston wrote:
Did your test program actually USE the 100 megs of ram? Because of "lazy allocation" or "optimistic memory allocation"*** as done by the kernel,
"over-commit" is the term you were looking for.
the memory is not actually consumed until used. When I did something similar, I simply wrote a char to each byte of memory(there are faster ways, but I wanted simple not fast)
I'm pretty sure you just need to write one byte to each page. (write one byte, move the counter by getpagesize()).