ltm rule command TMM cmp unit

iRule(1)						BIG-IP TMSH Manual						  iRule(1)

TMM::cmp_unit
       Returns the number (0-x) of the CPU executing the rule.

SYNOPSIS
       TMM::cmp_unit

DESCRIPTION
       This command returns the number (0-x) of the CPUs executing the rule.  Helpful if you believe one of the CPUs is doing
       something it shouldn't and you want to isolate the issue rather than see an aggregate of all CPUs.  To determine the total
       number of TMM instances running, see the TMM::cmp_count page. To determine which blade an iRule is current executing on,
       see the TMM::cmp_group page.

       Note that in versions v10.1.0 through v10.2.2 and v11.0.0, this command is valid in all events except RULE_INIT. This
       limitation was removed in v10.2.3 and v11.1.0 (ID 342860). You can work around this limitation as shown in the example
       below.

       Syntax

       TMM::cmp_unit

RETURN VALUE
       Returns the number (0-x) of the CPU executing the rule.

VALID DURING
       ANY_EVENT

EXAMPLES
	# Note this example won't work in 10.1.0 - 10.2.x
	# as the iRule parser doesn't allow TMM::cmp_unit in RULE_INIT
	when RULE_INIT {

	   # Check if we're running on the first CPU right now
	if {[TMM::cmp_unit] == 0}{
	      # This execution is happening on the first TMM instance
	      # Conduct any initialization functionality just once here
	      log local0. "some code"
	   }
	}

	# Instead, you can use an alternate method to hide the TMM::cmp_unit
	# command from the parser:
	when RULE_INIT {

	set tmm_cmd TMM::cmp_unit
	   # Check if we're running on the first CPU right now
	if {[eval $tmm_cmd] == 0}{
	      # This execution is happening on the first TMM instance
	      # Conduct any initialization functionality just once here
	      log local0. "some code"
	   }
	}

HINTS
SEE ALSO
CHANGE LOG
       @BIGIP-10.1.0 --First introduced the command.

BIG-IP							    2022-04-12							  iRule(1)