maxpgahead: Specifies th maximum number of pages to be read ahead. This value can range from 0 to 4096. It should be greater than or equal to minpgahead. The default value is 8. maxfree: Specifies the number of frames on the free list at which page stealing is to stop. This number can range from 16 to 204800 but must be greater than the number specified by the minfree parameter by at least the value of maxpgahead. The delta between minfree and maxfree should always be equal to or greater than maxpgahead. maxperm: Specifies the point above which the page stealing algorithm steals only file pages. The value is expressed as a percentage of the total real-memory page frames in the system. The specified value must be greater than or equal to one and less than or equal to 100. The default value of the maxperm percentage is (TOTAL_RAM - 4MB)*0.8 or around 75-80% of memory. The default maxperm value in pages is also equal to ((number of total memory frames)-1024)*0.8. minperm: Specifies the point below which the page-stealer will steal file or computational pages regardless of repaging rates. This value is a percentage of the total real-memory page frames in the system. The specified value must be greater than or equal to one and less than or equal to 100. The default value of the minperm percentage is (TOTAL_RAM - 4MB)*0.2 or around 20% of memory. The default minperm value in pages is also equal to ((number of total memory frames)-1024)*0.2. nbc_max_cache: Specifies the maximum size of the cache object allowed in the Network Buffer Cache without using the private segments. This parameter is in number of bytes, the default being 131,072 (128K) bytes. A data object bigger than this size is either cached in a private segment or is not cached at all. This attribute only applies to AIX Version 4.3.2 or later