On 06/20/2012 04:48 PM, Stefan Monnier wrote:

> I'm not completely sure the test is sufficiently thorough to catch all
> problems, and more importantly it doesn't test the efficiency
> of memalign.

If it's just a matter of configure test, different methods may be used.
For example, attached code checks whether memalign tends to create holes
while allocating (1024 - 8) blocks aligned at 1024-bytes boundary; optimal
pad (BLOCK_PADDING in current code) may be detected with the similar way.

Dmitry