measuring lan speed without glance

[John Lipsitz]

How can I measure lan speed (throughput) without having glance installed ? I can use ftp to see the speed, just want to monitor it during the working day.

[Stefan Farrelly · Accepted solution]

Use this script;

export HOSTNAME=$(hostname)
let z=0
let y=$(lanadmin -g mibstats 0|grep -i oct|grep Inbound|awk '{print $4}')
let y2=$(lanadmin -g mibstats 0|grep -i oct|grep Outbound|awk '{print $4}')
while true
do
let x=0
sleep 1
x=$(lanadmin -g mibstats 0|grep -i oct|grep Inbound|awk '{print $4}')
x2=$(lanadmin -g mibstats 0|grep -i oct|grep Outbound|awk '{print $4}')
let t=$x-$y
let t2=$x2-$y2
let y=$x
let y2=$x2
let z=$z+1
let t=$t/1000
let t2=$t2/1000
echo "${t} Kb/s inbound into $HOSTNAME, ${t2} Kb/s outbound from $HOSTNAME"
done

[John Lipsitz]

It doesnt work on my server. Just get syntax errors.

[Stefan Farrelly]

You need to identify the nmid for your lancard. It wont work on a 10Mb card, only a 100Mb+ card. For example, if you nmid (from lanscan/lanadmin) is 1 then change all lines;

lanadmin -g mibstats 0
to
lanadmin -g mibstats

[Ralph Grothe]

John,

though basically not much different from Stefan's solution, if you have Perl you could use the attached script.
To find out about its usage try

$ perldoc /path/where/this/script/was/copied_to


If your box isn't a MC/SG cluster and you know wich NIC's mibstats to query anyway, just change the line of code where the assignment to something like

my $prim_nic = 2;

if your NIC was say lan2.

[Suresh Patoria]

Hi,

Use the netstat -in command

Thanx

[ines coronado_2]

Hello I use the attached script using as argument the nmid of the lan card

[Geoff Wild]

Here's another script - output like:

# lan-thru-put
Started - Wed Nov 19 06:53:24 MST 2003

Iterations remaining: 1 ; Collection time: 60 seconds

Collecting data ...

Finished - Wed Nov 19 06:54:24 MST 2003

Interface IP Address Hostname InPkts OutPkts KbIn/Sec KbOut/Sec TtlKb/Sec
============================================================================================
lan4* none none 0 1 0 0 0
lan5 156.44.59.39 pc0004f 0 0 0 0 0
lan2:1 156.44.176.32 156.44.176.32 0 0 0 0 0
lo0 127.0.0.1 localhost 0 0 0 0 0
lan1 156.44.44.182 pc0004hb 0 2 0 0 0
lan5:1 156.44.59.32 iqadbcif 0 0 0 0 0
lan2 156.44.176.28 pc0004 0 0 0 0 0
lan3* none none 0 0 0 0 0


Rgds...Geoff

[Alzhy]

I used this as a simple, real-life and effective way to measure bandwidth performance and dispel any issues that "it is your disks that are slow"...

Open an FTP session with another server (Solaris or HPUX 11.11) and invoke the following:

put "|dd if=/dev/zero bs=32k count=1000" /dev/null

And here are the expected 1 way bandwidth on a switched environment:

100BT - 8-10 MBytes/sec
1000BT - 20-40 Mbytes/sec (dependent on CPU)
1000SX - 30-60 Mbytes/sec. (again dependent on CPU)
FCIP/IPFC (ie. JNI Cards running IP)
- 40-60 Mbytes/sec. sustained