mmscd(1M) mmscd(1M)
mmscd - communicates with MMSC (including front panel display) on
Origin2000 and Onyx2 rack systems
/usr/etc/mmscd [ -f sdev ] [ -c cdev ]
[ -b baud ] [ -u freq ]
[ -t "title" ] [ -N cpus ] [ -D fctr ]
[ -gdlmnGM ]
mmscd is a daemon run by /etc/rc2.d/S33sn0start. It handles all
necessary communications with an Origin2000 system's Multi-Module System
Controller (MMSC). An MMSC is usually connected to systems composed of
more than one module (one or more racks).
The MMSC controls power sequencing and fan speed, monitors system
sensors, and drives the LCD front panel. mmscd works with the MMSC to
run the CPU activity meter on the front panel, perform controlled normal
or emergency system shutdowns, and handle warning and alarm messages from
the system controller.
Only one mmscd can run as a daemon at a time, and it must be run as root.
After mmscd is started, it probes the console device to determine if an
MMSC is present, and if not, it exits.
The options are:
-f sdev
Specifies the name of a non-console serial device to which the MMSC
is attached, in the case where it is not connected directly to the
console port /dev/ttyd1. This can be used to test the graph display
without multiplexing MMSC control through the console.
-c cdev
Specifies the name of a console serial device to which the MMSC is
attached. This defaults to /dev/console on non-graphics systems,
but must be /dev/ttyd1 on graphics systems.
-b baud
Specifies a baud rate to use other than the default, whether the
MMSC is attached to the console or to a different serial device.
-g Graceful powerdown mode causes mmscd to handle shutdowns by sending
a hang-up signal to all processes, waiting two seconds, sending a
kill signal to all processes, syncing all disks, and then powering
the system down.
-d Debug mode mmscd displays debugging information relating to
transactions with the MMSC.
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mmscd(1M) mmscd(1M)
-l Display per node averages of cpu utilization. Each bar represents
the average of the cpu activity for all cpus on that node. This
option is provided for use with 256 processor systems and is the
default on those systems.
-m CPU meter mode causes performance information to be displayed on a
bar graph on the MMSC LCD panel. When the default console device is
used for MMSC communications, this data may have an impact on
console performance, depending on the amount of data and meter
update rate.
-M The display will show memory utilization information for each node.
Each bar will display the amount of free, in use, and kernel memory
for each node.
-u freq
Sets CPU meter update frequency in Hz. The default is chosen so as
to use at most 25% of available console bandwidth.
-D fctr
Sets CPU meter bar decay (smoothing) factor as a multiplier per
second. The default is 0.25.
-t title
Sets the title string at the top of the CPU meter display. The
default is "Origin2000 System Activity." The maximum string length
is 32. If the string is longer, the default title will be displayed
instead.
-N cpus
Causes mmscd to pretend there are a different number of CPUs than
there actually are when drawing the CPU meter. This is used to test
the CPU meter.
-n Prevents mmscd from forking into the background when it starts,
which is useful for debugging.
-G Include graphics information in CPU meter. Causes systems which
have graphics support to include an additional bar graph color to
indicate the amount of time the CPUs are spending waiting on
graphics.
The multi-module rack system must be cabled according to the instructions
in the user guide. If the cabling is incorrect, mmscd exits within 3
seconds of being started because the MMSC cannot be contacted.
Briefly, the ttyd1 serial port is connected to the MMSC BaseIO port (COM
4) using a DB-9 to DIN-8 cable. The ttyd1 port is the right-most BaseIO
serial port on the master module. The master module is the one whose
four-character LED display has a "c" next to the module number.
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mmscd(1M) mmscd(1M)
The system console is accessed by connecting a terminal to the Console
port (COM 1) on the MMSC. If connected properly, the MMSC will respond
with the prompt "MMSC>" when Control-T is typed on the terminal.
On systems with MMSC firmware earlier than version 1.1, it may be
necessary to enable the MMSC to talk. On the MMSC console, type
Control-T to get the MMSC prompt, and enter com 4 to list port settings.
Check the output for oob y. If you see oob n, then type Control-T and
enter com 4 oob y.
To try starting mmscd again, run /etc/init.d/sn0start start.
mmscd writes messages into /var/adm/syslog to indicate abnormal
conditions, such as when the connection to the MMSC is lost, or mmscd is
killed.
If mmscd exits within 3 seconds of being started, there is a problem with
the communications path (refer to CABLING above).
syslog(3C).
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