Reference:
Issue 451: Deprecate NUM_CPUS, TOTAL_PHYMEM and BOOT_TIME module constants https://code.google.com/p/psutil/issues/detail?id=451
Reference:
Issue 451: Deprecate NUM_CPUS, TOTAL_PHYMEM and BOOT_TIME module constants /code.google. com/p/psutil/ issues/ detail? id=451
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