An image log recording system which is capable of optimizing image log transfer. A plurality of log recording agents generate image logs. An image processing server performs image processing on the image logs transferred from the log recording agents. The image logs subjected to image processing by the image processing server are cumulatively stored in a database. Each of the image recording agents receives from a management server transfer settings for transferring an image log to the image processing server, and transfers an image log to the image processing server according to the transfer settings. The management server monitors load on the image log recording system and changes the transfer settings based on the monitored system load.