The following GridFTP-specific usage statistics are sent in a UDP packet at the end of each transfer, in addition to the standard header information described in the Usage Stats section.

Start time of the transfer
End time of the transfer
Version string of the server
TCP buffer size used for the transfer
Block size used for the transfer
Total number of bytes transferred
Number of parallel streams used for the transfer
Number of stripes used for the transfer
Type of transfer (STOR, RETR, LIST)
FTP response code -- Success or failure of the transfer

	Note
	The client (globus-url-copy) does NOT send any data. It is the servers that send the usage statistics.

We have made a concerted effort to collect only data that is not too intrusive or private and yet still provides us with information that will help improve and gauge the usage of the GridFTP server. Nevertheless, if you wish to disable this feature for GridFTP only, see the Logging section of Configuration interface. Note that you can disable transmission of usage statistics globally for all C components by setting "GLOBUS_USAGE_OPTOUT=1" in your environment.

Also, please see our policy statement on the collection of usage statistics.

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