Stack storage statistics

Language Environment stack storage is managed at the thread level; each thread has its own stack-type resources. Table 1 describes the fields in the storage report that contain various statistics about stack storage.

Table 1. Storage report fields that display stack storage statistics
Statistics categories	Field contents
STACK THREADSTACK LIBSTACK IPT STACK	The following fields display statistics for the upward-growing stack. Initial size Actual size of the initial segment assigned to each thread. If a pthread-attributes-table is provided on the invocation of pthread-create, then the stack size specified in the pthread-attributes-table will take precedence over the STACK runtime option. Increment size Size of each incremental segment acquired, as determined by the increment portion of the corresponding runtime option. Maximum used by all concurrent threads Maximum amount allocated in total at any one time by all concurrently executing threads. Largest used by any thread Largest amount allocated ever by any single thread. Number of segments allocated Number of segments allocated by all threads which includes the initial segments. Number of segments freed Number of incremental segments freed by all threads during the life of the threads. This does not include any incremental segments that were freed during thread termination.
XPLINK STACK XPLINK THREADSTACK	The following sections of the storage report display statistics for the downward-growing stack; they are only apply if XPLINK is in effect. Initial size Actual size of the initial segment assigned to each thread. Increment size Size of each incremental segment acquired, as determined by the increment portion of the corresponding runtime option. Maximum used by all concurrent threads Maximum amount allocated in total at any one time by all concurrently executing threads. Number of segments allocated Number of segments allocated by all threads which includes the initial segments. Number of segments freed Number of incremental segments freed by all threads during the life of the threads. This does not include any incremental segments that were freed during thread termination.