Wait Stats on Microsoft Azure test

On a particular test we're doing with Microsoft Azure, we are seeing a wait_category called: PAGE LATCH (non-I/O) that we're unfamiliar with. In our test, CaptureSeconds = 1595 and for PAGE LATCH (non-I/O) it reports: wait_time_ms = 126666216 wait_time_ms_per_sec = 79364 max_waiting_tasks = 13086110 average_wait_time_ms = 9 max_Wait_time_ms = 2526 Can someone tell me what PAGE LATCH (non-I/O) wait category is and whether this is indicating a problem of some sort? Thanks, RW