It´s so usefull to test network performance between two virtual machines , for example from a database server to the aplicacion client.
First, download Netperf for Linux or Windows O.S and install or unzip it:
Linux: http://www.netperf.org/netperf/DownloadNetperf.html
Windows: https://i18n-zh.googlecode.com/files/NetPerf-2.4.5-w32.zip
See a Windows example:
-Start server side. You can specified a port with -p
-Start client side. With -h you can see all the options.
In this case, we get a test with the result 524,55 Mbit/s (Mbps) between two virtual machines.
The simple test run for 10seconds, but this can be changed to. Netperf -h:
E:\datos\NetPerf-2.4.5-w32>netperf -h
Usage: netperf [global options] -- [test options]
Global options:
-a send,recv Set the local send,recv buffer alignment
-A send,recv Set the remote send,recv buffer alignment
-B brandstr Specify a string to be emitted with brief output
-c [cpu_rate] Report local CPU usage
-C [cpu_rate] Report remote CPU usage
-d Increase debugging output
-D [secs,units] * Display interim results at least every secs seconds
using units as the initial guess for units per second
-f G|M|K|g|m|k Set the output units
-F fill_file Pre-fill buffers with data from fill_file
-h Display this text
-H name|ip,fam * Specify the target machine and/or local ip and family
-i max,min Specify the max and min number of iterations (15,1)
-I lvl[,intvl] Specify confidence level (95 or 99) (99)
and confidence interval in percentage (10)
-l testlen Specify test duration (>0 secs) (<0 bytes="" font="" trans="">
-L name|ip,fam * Specify the local ip|name and address family
-o send,recv Set the local send,recv buffer offsets
-O send,recv Set the remote send,recv buffer offset
-n numcpu Set the number of processors for CPU util
-N Establish no control connection, do 'send' side only
-p port,lport* Specify netserver port number and/or local port
-P 0|1 Don't/Do display test headers
-r Allow confidence to be hit on result only
-t testname Specify test to perform
-T lcpu,rcpu Request netperf/netserver be bound to local/remote cpu
-v verbosity Specify the verbosity level
-W send,recv Set the number of send,recv buffers
-v level Set the verbosity level (default 1, min 0)
-V Display the netperf version and exit
For those options taking two parms, at least one must be specified;
specifying one value without a comma will set both parms to that
value, specifying a value with a leading comma will set just the second
parm, a value with a trailing comma will set just the first. To set
each parm to unique values, specify both and separate them with a
comma.
* For these options taking two parms, specifying one value with no comma
will only set the first parms and will leave the second at the default
value. To set the second value it must be preceded with a comma or be a
comma-separated pair. This is to retain previous netperf behaviour.
E:\datos\NetPerf-2.4.5-w32>
Take care with the units (about caudal, no about velocity):
106 bit = 1 000 000 bit/s = 1 Mbit/s
1 megabyte/s = 8 megabit/s
1 megabit/s = 1000 kilobit/s = 125 kilobyte/s
| Unit | Bits | Bits / 1,000,000 |
|---|---|---|
| Mega-bit | 1,000,000 | 1.0 |
| Mebi-bit | 1,048,576 | 1.05 |
| Mega-byte | 8,000,000 | 8.0 |
| Mebi-byte | 8,388,608 | 8.39 |
Training NetPerf http://www.netperf.org/netperf/training/Netperf.html
