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|
#!/bin/sh
#
# stream_range
#
# generate a whole lot of numbers from netperf to see the effects
# of send size on thruput
#
#
# usage : tcp_stream_range hostname [CPU]
#
if [ $# -gt 2 ]; then
echo "try again, correctly -> tcp_stream_range hostname [CPU]"
exit 1
fi
if [ $# -eq 0 ]; then
echo "try again, correctly -> tcp_stream_range hostname [CPU]"
exit 1
fi
# if there are two parms, parm one it the hostname and parm two will
# be a CPU indicator. actually, anything as a second parm will cause
# the CPU to be measured, but we will "advertise" it should be "CPU"
if [ $# -eq 2 ]; then
REM_HOST=$1
LOC_CPU="-c"
REM_CPU="-C"
fi
if [ $# -eq 1 ]; then
REM_HOST=$1
fi
# at what port will netserver be waiting? If you decide to run
# netserver at a differnet port than the default of 12865, then set
# the value of PORT apropriately
#PORT="-p some_other_portnum"
PORT=""
# where is netperf, and are there any "constant" options such as
# the netserver port number
#NETHOME=/usr/etc/net_perf
NETHOME="."
NETPERF=$NETHOME/netperf $PORT
# How accurate we want the estimate of performance:
# maximum and minimum test iterations (-i)
# confidence level (99 or 95) and interval (percent)
STATS_STUFF="-i 10,2 -I 99,3"
#
# some stuff for the arithmetic
#
# we start at start, and then multiply by MULT and add ADD. by changing
# these numbers, we can double each time, or increase by a fixed
# amount, or go up by 4x, whatever we like...
#
START=1
END=65536
MULT=4
ADD=0
# If we are measuring CPU utilization, then we can save beaucoup
# time by saving the results of the CPU calibration and passing
# them in during the real tests. So, we execute the new CPU "tests"
# of netperf and put the values into shell vars.
case $LOC_CPU in
\-c) LOC_RATE=`$NETPERF -t LOC_CPU`;;
*) LOC_RATE=""
esac
case $REM_CPU in
\-C) REM_RATE=`$NETPERF -t REM_CPU -H $REM_HOST`;;
*) REM_RATE=""
esac
TIME="60"
#
# the maximum socket buffer size is system dependent. for the
# "cannonical" tests we use 32KB, but this can be altered
#
SOCKET_SIZE="-s 32768 -S 32768"
MESSAGE=$START
while [ $MESSAGE -le $END ]; do
echo
echo ------------------------------------
echo Testing with the following command line:
echo $NETPERF -l $TIME -H $REM_HOST -t TCP_STREAM\
$LOC_CPU $LOC_RATE $REM_CPU $REM_RATE $STATS_STUFF --\
-m $MESSAGE $SOCKET_SIZE
echo
$NETPERF -l $TIME -H $REM_HOST -t TCP_STREAM\
$LOC_CPU $LOC_RATE $REM_CPU $REM_RATE $STATS_STUFF --\
-m $MESSAGE $SOCKET_SIZE
MESSAGE=`expr $MESSAGE + $ADD`
MESSAGE=`expr $MESSAGE \* $MULT`
done
echo
|
