COBHAM GRMON3 - Page 153

GRMON3-UM
June 2019, Version 3.1.0
153 www.cobham.com/gaisler
55. l3stat - syntax
NAME
l3stat - Control Leon3 statistics unit
SYNOPSIS
l3stat subcommand ?args...?
l3stat index subcommand ?args...?
DESCRIPTION
This command provides functions to control the L3STAT core. If more than one core exists in the system, then the
index of the core to control should be specified after the l3stat command (before the subcommand). The 'info
sys' command lists the device indexes.
l3stat events
Show all events that can be selected/counted
l3stat status
Display status of all available counters.
l3stat clear cnt
Clear the counter cnt.
l3stat set cnt cpu event ?enable? ?clearonread?
Count the event using counter cnt on processor cpu. The optional enable parameter defaults to 1 if
left out. The optional clearonread parameter defaults to 0 if left out.
l3stat duration cnt enable ?lvl?
Enable the counter cnt to save maximum time the selected event has been at lvl. When enabling the lvl
parameter must be present, but when disabling it be left out.
l3stat poll start stop interval hold
Continuously poll counters between start and stop. The interval parameter sets how many seconds
between each iteration. If hold is set to 1, then it will block until the first counter is enabled by other means
(i.e. software). The polling stops when the first counter is disabled or a SIGINT signal (Ctrl-C) is sent to
GRMON.
l3stat runpoll start stop interval
Setup counters between start and stop to be polled while running an application (i.e. 'run, 'go' or 'cont'
commands). The interval argument in this case does not specify the poll interval seconds but rather in
terms of iterations when GRMON polls the Debug Support Unit to monitor execution. A suitable value for
the int argument in this case depends on the speed of the host computer, debug link and target system.
EXAMPLE
Enable maximum time count, on counter 1, when no instruction cache misses has occurred.
grmon3> l3stat set 1 0 icmiss
grmon3> l3stat duration 1 1 0
Disable maximum time count on counter 1.
grmon3> l3stat duration 1 0
Poll for cache misses when running.
grmon3> l3stat set 0 0 dcmiss
grmon3> l3stat set 1 0 icmiss
grmon3> l3stat runpoll 0 1 5000
grmon3> run