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When using TLS is a block cannot be decrypted (i.e. the internal checksum doesn't match) then TLS simply closes the connection
Correct. The mystery is that, when we're doing HTTPS (or xrdcp without pgread over ROOTS) there are no TLS errors. Why are there only TLS errors when using pgread?
is expected that the transfer rate will slow as corrections occur in single 4k page units
Particularly, there are 128 4k pages and a handful of outstanding "normal" size reads from XCache (I believe there were 5 x 512KB). So, 6 x 512KB = 3MB of outstanding data.
The origin was running at around 60MB/s at a distance of about 50ms. So, if the requests were handled serially (I don't think they are?), this would take about 2 seconds to recover. Yet the timeouts were hit at around 1 minute of zero bytes of throughput.
Anyhow -- the basic question remains: does anyone else observe a ~0% success rate when handling files >>10GB with pgread?
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