XCaches now check checksums of all the block transferred before writing them down.
If the checksums did not match, the block was retransmitted.
In the g-stream, xcaches report number of retransmits that happened at each file access.
We monitor that number.
But it is unrealistically large.
It seems that all our xcaches and all our origins show excessive checksum errors.
So, either there is something wrong in checksum calculation, or in reporting numbers of retransmits.


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