System parameters

[baggins]

Hi,

I would like to log some system parameters such as cpu load, system temperature, memory, network activity, KNX bus activity, etc.

So far I have only been able to figure out cpu load (cat /proc/loadavg) and memory (free).

How can I get the other system parameters?


Thanks.

[baggins]

Nobody knows?

Thanks.

[buuuudzik]

Here you have some documentation which you can use to check some parameters(network, mounts, disk space):
proc file system
[url=https://www.centos.org/docs/5/html/5.1/Deployment_Guide/ch-proc.htmlhttps://www.centos.org/docs/5/html/5.1/Deployment_Guide/ch-proc.html][/url]
Example of checking memory usage:

Code:

f = assert (io.popen("cat /proc/meminfo"))
response = {}
for line in f:lines() do
 table.insert(response, line)
end -- for loop
 
f:close()
log(response)

Example of checking how many and what are the names of files on '/home/ftp/':

Code:

f = assert (io.popen ("ls /home/apps"))
response = {}
for line in f:lines() do
 table.insert(response, line)
end -- for loop
 
f:close()
log('There are ' .. #response .. ' files on the server.',response)

[admin]

For network activity, you can get current stats like this:

Code:

require('ifinfo')
stats = ifinfo().eth0
log(stats)

You will still have to store older values somewhere if you want to get stats for the current hour/day/etc.
There's no API for getting KNX stats at the moment, but it might get added in the next FW.

[baggins]

Thanks for this.

Where can I find info on temperature? I can't find it in the standard places. From time to time I have temperature warnings so I would like to keep track of this.

[admin]

TP-UART chip which generates temperature warning does not provide the temperature value

[baggins]

Too bad

I might try to stick a 1-wire temp sensor to the LM just to have some indication...

[Thomas]

Hi
How about KNX BUS load? Is there this value available in LM?
Thank you.

[admin]

In next FW release there will be a function called knxlib.getstats() which will return the numbe of IP and TP telegrams sent/received. Total bus load can be calculated from these values.

[buuuudzik]

Hi
How about KNX BUS load? Is there this value available in LM?
Thank you.

You can also do something like this:

Code:

-- Checking how many object from database was updated in last 5 seconds
delta=os.microtime() - 5
query = "SELECT name FROM objects WHERE updatetime>" .. delta
updated = db:getall(query)

log(#updated)

It gives an info about how many objects from database was updated in the last 5 seconds(if 1 object was updated a few times in this 5 seconds it would't be counted). You can also change this 5 second to other value e.g. 1s.

[Erwin van der Zwart]

Hi,

This also include grp.update and is not part of the busload, combined with the multiple triggered items within the time period it's not a trustfull methode..

I would wait for next FW where new knx.lib function will be available..

BR,

Erwin