CPU Load Log as Trend

[manos@dynamitec]

Hello everyone,

Does anyone know how could I get the CPU load as a 2byte value (virtual object) and then make a Trend Log with a resolution of 1sec or log by delta change = 1% of CPU usage?

What I need to achieve is a historic data log from the CPU usage.

Kind regards and thank you for any help in advance

[Daniel]

This will give you load and memory

Code:

data = io.readfile('/proc/meminfo')
load = io.readfile('/proc/loadavg'):split(' ')[ 1 ]

memtotal = data:match('MemTotal:%s+(%d+)')
memavail = data:match('MemAvailable:%s+(%d+)')
memusage = math.floor((memtotal - memavail) / memtotal * 1000) / 10

log(tonumber(load), memusage)

[manos@dynamitec]

This will give you load and memory

Code:

data = io.readfile('/proc/meminfo')
load = io.readfile('/proc/loadavg'):split(' ')[ 1 ]

memtotal = data:match('MemTotal:%s+(%d+)')
memavail = data:match('MemAvailable:%s+(%d+)')
memusage = math.floor((memtotal - memavail) / memtotal * 1000) / 10

log(tonumber(load), memusage)

Hello Daniel.

Thank you for your reply.

I am getting values 0.24 , 0.25 ... Does this mean the CPU load is 0.24 %?

[Daniel]

No it is not percentage, it is bit more complicated in linux. Try reading this
https://www.tecmint.com/understand-linux...rformance/

To write to object just do it like that:
grp.update('1/1/1', tonumber(load))

[manos@dynamitec]

No it is not percentage, it is bit more complicated in linux. Try reading this
https://www.tecmint.com/understand-linux...rformance/

To write to object just do it like that:
grp.update('1/1/1', tonumber(load))

Yes I figured out how to write the value to the object but the Load average is indeed complicated. So then it will require a script to calculate properly the % of CPU load average for the last 1min.

Does anyone have a solution for this?

[admin]

Use this script to log CPU load to an object. Resident script sleep time controls how often load is calculated.

Code:

data = io.readfile('/proc/uptime'):split(' ')
total, idle = tonumber(data[ 1 ]), tonumber(data[ 2 ])

if prevtotal then
  deltatotal = total - prevtotal
  deltaidle = idle - previdle

  load = math.floor((1 - (deltaidle / deltatotal)) * 100 + 0.5)
  grp.update('32/0/0', load)
end

prevtotal, previdle = total, idle

[manos@dynamitec]

Thank you Admin. As always works perfectly. 

[Jørn]

Use this script to log CPU load to an object. Resident script sleep time controls how often load is calculated.

Code:

data = io.readfile('/proc/uptime'):split(' ')
total, idle = tonumber(data[ 1 ]), tonumber(data[ 2 ])

if prevtotal then
  deltatotal = total - prevtotal
  deltaidle = idle - previdle

  load = math.floor((1 - (deltaidle / deltatotal)) * 100 + 0.5)
  grp.update('32/0/0', load)
end

prevtotal, previdle = total, idle

What datatype would appropiate for this output`?

[admin]

5.001 - 0..100%