VMS Help V73 Features, Programming Features, SDA Commands for Spinlock Tracing, SPL_START_COLLECT  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    This command accumulates information for a specific spinlock.
    Qualifiers for the SPL START COLLECT Command shows the qualifiers
    for this command:

    Table 5-4 Qualifiers for the SPL START COLLECT Command

    Qualifier          Meaning

    /SPINLOCK=spinlock Specifies the tracing of a specific
                       spinlock, for example, /SPINLOCK=LCKMGR or
                       /SPINLOCK=SCHED
    /ADDRESS=n         Specifies the tracing of a specific spinlock
                       by address