> Hello,
>
> I have a RH5 machine where load is quiet inequally distributed, as
> reported by sar:
>
>             CPU   %user   %nice  %system  %iowait   %steal   %idle
> Average:       all    3.26    0.00    1.80    0.02    0.00   94.92
> Average:        0   20.73    0.00   10.78    0.05    0.00   68.44
> Average:        1    0.68    0.00    0.53    0.00    0.00   98.78
> Average:        2    1.07    0.00    0.65    0.00    0.00   98.28
> Average:        3    0.73    0.00    0.48    0.01    0.00   98.78
> Average:        4    0.62    0.00    0.49    0.05    0.00   98.84
> Average:        5    0.70    0.00    0.50    0.04    0.00   98.77
> Average:        6    0.69    0.00    0.44    0.00    0.00   98.87
> Average:        7    0.75    0.00    0.48    0.00    0.00   98.76
>
> The machine runs apache (prefork-mpm) which serves php pages from an
> NFS mount.
>
> As the machine is not very loaded, it's not really a problem. But I'm
> wondering what will happen when load rises.
>
> Should I worry about weirdness ? Is it possible to alter the way the
> scheduler work ?

What problem are you trying to solve?

Energy-wise it's better to have one slightly loaded core and the rest
idling instead of all cores doing minimal work.

--

Jussi

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