Calculating diskfull_time

Use the following formula to calculate how long it takes Access Gateway to fill your logging disk space:

diskfull_time in seconds = logpartition_size / (request_rate *
   logentry_size * num_services)

For example, assume the following:

  • logpartition_size = 1 GB (1,073,741,824 bytes)
  • request_rate = 1000 requests per second
  • logentry_size = 1 KB (1,024 bytes)
  • num_services = 1
diskfull_time = (1 GB) / (1000 * 1 KB * 1) = 1048 seconds (17.47
   minutes)

The logging disk space fills up every 17.47 minutes.

To calculate the diskfull_time for your Access Gateway:

  1. Determine the values of the four variables listed above.

  2. Use the diskfull_time formula to calculate how often you can expect your logging disk to fill, then use the result in Calculating max_roll_time.

If your diskfull_time interval is too short to be practical for your rollover schedule, the easiest option is to reduce the log entry size by configuring the proxy services to log less information per transaction.