Inside of the User-ID Agent logs, you may see the following message(s).
08/01/16 21:46:14:819[ Warn 839]: need to alloc 4423 bytes for big body 08/01/16 21:46:15:022[ Warn 839]: need to alloc 4428 bytes for big body 08/01/16 21:46:15:224[ Warn 839]: need to alloc 4434 bytes for big body 08/01/16 21:46:15:427[ Warn 839]: need to alloc 4439 bytes for big body 08/01/16 21:46:15:630[ Warn 839]: need to alloc 4429 bytes for big body
The message you see repeatedly stating that it needs to allocate xxxx bytes for "big body" is because Palo Alto Networks set the default number to be 4096 bytes, which is exactly the size of one memory page in the OS memory management system. The memory being aligned to page size is helpful for performance improvements. However, sometimes there are messages that can be larger than 4096 bytes and in that case, the agent will assign more memory to compensate for that.
Because this is a simple notification message about what is going on with the file system, there is no action needed. There is no impact on the agent.