Initial size—the actual size of the initial stack area assigned
to each thread. If a pthread-attributes-table is provided on the invocation
of pthread-create, the stack size specified in the pthread-attributes-table
takes precedence over the stack runtime options.
Increment size—the size of each incremental stack area made
available, as determined by the increment portion of the corresponding
runtime option.
Maximum used by all concurrent threads—the maximum amount
allocated in total at any one time by all concurrently executing threads.
Largest used by any thread—the largest amount allocated
ever by any single thread.
Number of increments allocated—the number of incremental
segments allocated by all threads.