test-network is a simple script that tests
network performance on a sun system in a variety of scenarios:
10BaseT, Half Duplex
10BaseT, Full Duplex
100BaseT, Half Duplex
100BaseT, Full Duplex
The basic algorithm: try pinging a host a few times, and if
there's eventually a response, then send a constant amount of data
to a remote host via ssh, and time how long it takes.
Interpreting the results: Look for the "real" time; lower values are
good.
Example output:
bash-2.05# ./test-network
10 hdx
No ping (yet?)
No ping (yet?)
Network is at least minimally usable
Starting performance test - transfer 1 meg by ssh
1+0 records in
1+0 records out
real 1.6
user 0.3
sys 0.0
/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
10 fdx
No ping (yet?)
No ping (yet?)
Network is at least minimally usable
Starting performance test - transfer 1 meg by ssh
1+0 records in
1+0 records out
real 29.4
user 0.2
sys 0.0
/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
100 hdx
No ping (yet?)
No ping (yet?)
Network is at least minimally usable
Starting performance test - transfer 1 meg by ssh
1+0 records in
1+0 records out
real 0.5
user 0.3
sys 0.0
/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
100 fdx
No ping (yet?)
No ping (yet?)
Network is at least minimally usable
Starting performance test - transfer 1 meg by ssh
1+0 records in
1+0 records out
real 12.5
user 0.3
sys 0.0
/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
An example of selecting what was best, and verifying that it's decent:
bash-2.05# ndd -set /dev/eri instance 0
bash-2.05# ndd -set /dev/eri adv_10hdx_cap 0
bash-2.05# ndd -set /devap 0 adv_10fdx_cap 0
bash-2.05# ndd -set /devap 0 adv_100hdx_cap 1
bash-2.05# ndd -set /devap 0 adv_100fdx_cap 0
bash-2.05# ndd -set /dev/eri adv_autoneg_cap 0
bash-2.05# ping 128.200.34.1 5
no answer from 128.200.34.1
bash-2.05# ping 128.200.34.1 5
no answer from 128.200.34.1
bash-2.05# ping 128.200.34.1 5
no answer from 128.200.34.1
bash-2.05# ping 128.200.34.1 5
no answer from 128.200.34.1
bash-2.05# ping 128.200.34.1 5
no answer from 128.200.34.1
bash-2.05# ping 128.200.34.1 5
128.200.34.1 is alive
bash-2.05# dd if=/dev/zero bs=1024k count=256 | /dcs/bin/python /dcslib/allsys/etc/reblock $[1024*1024] 300 | ssh root@nsc-1.nacs.uci.edu 'cat > /dev/null'
stdin not seekable - will not give percentage
Kbytes: 109568.0 Mbits/s: 14.2 Gbytes/hr: 6.2 min: 1.0
Kbytes: 219136.0 Mbits/s: 14.2 Gbytes/hr: 6.2 min: 2.0
256+0 records in Mbits/s: 14.0 Gbytes/hr: 6.1 min: 2.4
256+0 records out
Kbytes: 262144.0 Mbits/s: 14.0 Gbytes/hr: 6.1 min: 2.4
bash-2.05#
