RECOMMENDATIONS SECTION

NOTE: The following recommendations are being made in an environment where a large amount of spare capacity existed. If the sar data used to produce this report comes from a time when activity was uncharacteristically light, these recommendations may not help performance when the system is busy.

All recommendations contained in this report are based solely on the conditions which were present when the performance data was collected. It is possible that conditions which were not present at that time may cause some of these recommendations to result in worse performance. To minimize this risk, analyze data from several different days, implement only regularly occurring recommendations, and implement them one at a time.

Change the value of the thrashing threshold from 6 to 0 with the command '/usr/samples/kernel/schedtune -h 0'. This change disables the virtual memory manager's ability to suspend processes. If it causes performance degradation, add memory.

Changes made with schedtune are immediate and will last until the next reboot. If these changes improve performance, put the command in /etc/inittab or one of the /etc/rc scripts that are run when the system is booted.