Hello,I have two questions about tor's relay: 1-How can I calculate the throughput of each circuit in a relay?I mean that how can I calculate the number of cells that are sent from circuit queue to the output buffer per second in each relay? 2-What is the difference between circuit and channel in relays? I'm looking forward to hearing from you! thanks! Marziyeh
On 12/4/18 4:48 PM, marziyeh latifi wrote:
Hello,I have two questions about tor's relay: 1-How can I calculate the throughput of each circuit in a relay?I mean that how can I calculate the number of cells that are sent from circuit queue to the output buffer per second in each relay?
You might be able to with the CIRC_BW control command. https://gitweb.torproject.org/torspec.git/tree/control-spec.txt#n2988 (I'm not sure if this is a client-only command or if relays can use it for circuits that go through them)
If not, I don't think you can without modifying Tor's source code.
2-What is the difference between circuit and channel in relays? I'm looking forward to hearing from you! thanks!
Channels are a thin wrapper around connections (which themselves are a nice wrapper around TCP sockets) in Tor's source code.
There can be many circuits on a channel.
Matt
PS: this question makes more sense for tor-dev@
Just curious, what's your research purpose for the data. Once you calculate thorughput, what do you hope to learn about the network? What conclusion do you expect to reach?
Cordially, Nathaniel Suchy
Dec 4, 2018, 5:26 PM by pastly@torproject.org:
On 12/4/18 4:48 PM, marziyeh latifi wrote:
Hello,I have two questions about tor's relay: 1-How can I calculate the throughput of each circuit in a relay?I mean that how can I calculate the number of cells that are sent from circuit queue to the output buffer per second in each relay?
You might be able to with the CIRC_BW control command. https://gitweb.torproject.org/torspec.git/tree/control-spec.txt#n2988 https://gitweb.torproject.org/torspec.git/tree/control-spec.txt#n2988 (I'm not sure if this is a client-only command or if relays can use it for circuits that go through them)
If not, I don't think you can without modifying Tor's source code.
2-What is the difference between circuit and channel in relays? I'm looking forward to hearing from you! thanks!
Channels are a thin wrapper around connections (which themselves are a nice wrapper around TCP sockets) in Tor's source code.
There can be many circuits on a channel.
Matt
PS: this question makes more sense for tor-dev@ _______________________________________________ tor-relays mailing list tor-relays@lists.torproject.org mailto:tor-relays@lists.torproject.org https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-relays https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-relays
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Nathaniel Suchy