[tor-relays] Traffic pattern on Tor relay

[grarpamp]

> From time to time
>
> that the traffic oscillates with a period of about 14 seconds and the
> traffic doubles in the peaks.

1? Some buffer fill/pause/empty cycle somewhere during a large transfer.
Try building a circuit through your node and transfer large to eliminate your
node if cycle is not always present during this xfer.

2? Cyclic process[es] loading your node.