we wrote down some notes on our experiece:
https://osservatorionessuno.org/blog/2025/02/how-to-configure-multiple-tor-relays-on-the-same-interface-with-different-ips/
On 2/4/25 9:41 AM, bic wrote:
hello
I have a configuration quite similar[1] to yours and previously posted a
similar question on the list. I try to summarize the response that I
received
1. The big bottleneck is clock per core, for this is quite hard to
predict bandwidth per core consumption. In the range 1GHz-4GHz you can
have from 6 to 40MBs
2. Run a separate tor instance for every physical core that you have
3. Allocation ~500MB of memory for every instance, this is quite
empirical for my experience
5. Try to use a different ip for every instance, this is not mandatory
but if you share multiple relay on the same ip is easier to block them
in bulk
6. Make sure to configure the SrcIp of every relay to match their public ip
My personal suggestion is to make experiments and share on the list/
forum the result also with some information on the hardware. But to put
down some numbers:
Imagine to have a good 3GHz cpu with good cache and AES support for
crypto operation and 8 phisical core:
(n core) * (measured bandwidth)
8 * 30Mb * 8 (bits) = ~2Gbit
Later in this days I plan to publish a blog post on running this
configuration, home that will be useful for you.
[1]: https://osservatorionessuno.org/blog/2024/12/how-to-bgp-from-your-
basement-and-other-tales/
On 2/3/25 5:00 PM, usetor.wtf via tor-relays wrote:
Hi All,
Looking for guidance around running high performance Tor relays on
Ubuntu.
Few questions:
1) If a full IPv4 /24 Class C was available to host Tor relays, what
are some optimal ways to allocate bandwidth, CPU cores and RAM to
maximize utilization of the IPv4 /24 for Tor?
2) If a full 10 Gbps connection was available for Tor relays, how many
CPU cores, RAM and IPv4 addresses would be required to saturate the 10
Gbps connection?
3) Same for a 20 Gbps connection, how many CPU cores, RAM and IPv4
addresses are required to saturate?
Thanks!
Sent with Proton Mail <https://proton.me/mail/home> secure email.
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