How does the memory usage calculated?

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Hi all,

I’m studying the source code, and I saw this in domain.py around line 164:

        curmem = stats['rss']

        totalmem = stats['actual']

except libvirt.libvirtError, err:

    logging.error("Error reading mem stats: %s", err)

 

pcentCurrMem = curmem * 100.0 / totalmem

pcentCurrMem = max(0.0, min(pcentCurrMem, 100.0))

 

But using this algorithm, I’m always getting results that are greater than 100:

>>> dom.memoryStats()

{'actual': 16777216L, 'rss': 17062900L}

 

17062900 * 100 / 16777216 = 101.7028…

 

Is this normal?

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