NAME¶
tping - Send echo messages to LAM nodes.
SYNOPSIS¶
tping [-hv] [-c count] [-d delay] [-l length] nodes
OPTIONS¶
- -h
- Print the command help menu.
- -v
- Turn OFF verbose mode.
- -c count
- Send count messages.
- -d delay
- Delay delay seconds between each message.
- -l length
- Each message is length bytes long.
DESCRIPTION¶
The
tping command sends messages to, and collects replies from, a list of
nodes, via the LAM echo server. It is similar to the UNIX
ping(8) command, and
is used as a quick diagnosis of the LAM network.
Unless options are specified,
tping sends a 1 byte message an infinite
number of times, displaying the roundtrip time of each message as it
completes, with a delay of 1 second between roundtrips. After the loop is
broken (with keyboard interrupt, eg: ^C),
tping prints statistics about
all roundtrip messages.
EXAMPLES¶
- tping h
- Echo messages to the local node.
- tping -v n7 -l 1000 -c 10
- Echo 1000 byte messages to node 7. Stay silent while working. Stop after
10 roundtrips and report statistics.
BUGS¶
There is no built-in timeout and
tping will wait forever to receive an
echo. If no echo is received, due to a dead link or node,
tping hangs.
Stop the process with a keyboard suspend signal (eg: ^Z) and terminate LAM
with
lamhalt(1) or
lamwipe(1) (although the use of
lamwipe(1) is deprecated).
SEE ALSO¶
lamhalt(1),
lamwipe(1)