To Tune the Notification Threadpool Size

Set the value of com.iplanet.am.notification.threadpool.size based on number of CPUs and based on the purgedelay value. See To Tune the Purge Delay Settings for related information.

• If purgedelay is set to 0, the threadpool should be set using the following formula: (number of CPUs) x 3 = threadpool size. For example, for a machine with 8 CPUs, the threadpool size is 24. For CMT T1, T2, and T2 plus machines, use the formula: (number of cores) x 3 = threadpool size. The amtune tool sets this value based on the above rules, when purgedelay is set to 0, which is the default setting.

• If the purgedelay value is set to greater than 0, then the threadpool should be set using the following formula: (number of CPUs) x 4 = threadpool size . For CMT T1, T2, and T2 plus machines, use the formula: (number of cores) x 4 = threadpool size. The notification threadpool size should be set manually by a multiple of 4 times the number of CPUs or cores. With this setting, if you still see problems such as frequent "Cannot send notification" or "Notification task queue full" errors in the amSession debug file, this indicates that the SessionNotificationqueue is full. The problem could be related to the Policy Agent or SDK client which is receiving notifications. The Policy Agent or SDK client is not able to process notifications properly. Consider disabling notification mode on the Policy Agent.