Comtrol eCos - Manual (Page 98)

Kernel Real-time Characterization
Peek [empty] mbox
This test measures the cyg_mbox_peek() call. An attempt is made to peek the value in each mailbox, which
is currently empty. The purpose of this test is to measure the cost of checking a mailbox for a value without
blocking.
Put [first] mbox
This test measures the cyg_mbox_put() call. One item is added to a currently empty mailbox. The purpose
of this test is to measure the cost of adding an item to a mailbox. There are no other threads currently waiting
for mailbox items to arrive.
Peek [1 msg] mbox
This test measures the cyg_mbox_peek() call. An attempt is made to peek the value in each mailbox, which
contains a single item. The purpose of this test is to measure the cost of checking a mailbox which has data to
deliver.
Put [second] mbox
This test measures the cyg_mbox_put() call. A second item is added to a mailbox. The purpose of this test
is to measure the cost of adding an additional item to a mailbox. There are no other threads currently waiting
for mailbox items to arrive.
Peek [2 msgs] mbox
This test measures the cyg_mbox_peek() call. An attempt is made to peek the value in each mailbox, which
contains two items. The purpose of this test is to measure the cost of checking a mailbox which has data to
deliver.
Get [first] mbox
This test measures the cyg_mbox_get() call. The first item is removed from a mailbox that currently contains
two items. The purpose of this test is to measure the cost of obtaining an item from a mailbox without blocking.
Get [second] mbox
This test measures the cyg_mbox_get() call. The last item is removed from a mailbox that currently contains
one item. The purpose of this test is to measure the cost of obtaining an item from a mailbox without blocking.
Tryput [first] mbox
This test measures the cyg_mbox_tryput() call. A single item is added to a currently empty mailbox. The
purpose of this test is to measure the cost of adding an item to a mailbox.
Peek item [non-empty] mbox
This test measures the cyg_mbox_peek_item() call. A single item is fetched from a mailbox that contains a
single item. The purpose of this test is to measure the cost of obtaining an item without disturbing the mailbox.
Tryget [non-empty] mbox
This test measures the cyg_mbox_tryget() call. A single item is removed from a mailbox that contains
exactly one item. The purpose of this test is to measure the cost of obtaining one item from a non-empty
mailbox.
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