memory utilization questions

[Stefan Parvu]

Im planning to calculate real used, free memory. Can anyone confirm if these
are correct:

1. real used memory

 usedmem = totalmem - freemem,

    totalmem = vm.stats.vm.v_page_count x page_size
    freemem = vm.stats.vm.v_free_count x page_size


 2. real free memory

    realfree = inactive + cache + free ?

    inactive = vm.stats.vm.v_inactive_count x page_size
    cache = vm.stats.vm.v_cache_count x page_size
    free = vm.stats.vm.v_free_count x page_size


Thanks,
-- 
Stefan Parvu <sparvu at systemdatarecorder.org>