Great product, it is definitely a great logging tool.
Although, I want to log everything to just one document, regaurdless of the document size. Although, I am running into a problem where if I expand the Max Document Size to a number such as 500,000 bytes it takes significantly longer to process. To improve performance, would it not be a bad idea to save the document every 10 log events? Or every 'x' log events? I tested it and just doing if log_event_number mod 10 then save, the performance is greatly increased. Although it ended breaking something else, so we reverted back.
Just a suggestion.