cpumeter
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## cpumeter

cpumeter — Reports the usage of cpu either total or per core.

## Description

Reports the usage of cpu either total or per core to monitor how close to max-out the processing is.

Please note that this opcode is currently only supported on GNU/Linux .

## Syntax

    ktot[,kcpu1, kcpu2,...]cpumeter ifreq

## Initialization

ifreq is the time in seconds that the meter is refreshed. If this is too low then mainly figures of zero or one hundred occur. A value of 0.1 seems acceptable.

## Performance

cpumeter reads the total idle time in the last ifreq seconds and reports it as a percentage usage. If more than just ktot results are requested these report the same value for individual cores.

## Examples

Here is an example of the cpumeter opcode. It uses the file cpumeter.csd.

Example 183. Example of the cpumeter opcode.

See the sections Real-time Audio and Command Line Flags for more information on using command line flags.

    <CsoundSynthesizer>
    <CsOptions>
    ; Select audio/midi flags here according to platform
    -odac     ;;;realtime audio out
    ;-iadc    ;;;uncomment -iadc if realtime audio input is needed too
    ; For Non-realtime ouput leave only the line below:
    ; -o cpumeter.wav -W ;;; for file output any platform
    </CsOptions>
    <CsInstruments>

    sr = 44100
    ksmps = 32
    nchnls = 1
    0dbfs  = 1

    instr 1 ;cpu metering; stop when too large
    k0   cpumeter   0.1
         printk2 k0
         if k0>70 then
           event "i", 3, 0.1, 1
         endif
    endin

    instr 2
         event_i    "i", 2, 1, 1000
         asig oscil 0.2, 440, 1
         out asig
    endin

    instr 3
         exitnow
    endin
    </CsInstruments>
    <CsScore>
    f 1 0 32768 10 1	; sine wave

    i 1 0 1000
    i 2 0 1000
    e
    </CsScore>
    </CsoundSynthesizer>

## See Also

maxalloc, prealloc, cpuprc

## Credits

Author: John ffitch
May 2011

New in Csound version 5.14, for Linux/Unix and OSX only

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