Re: [tor-relays] Hardware requirements for a fast Tor relay

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Thank you for your suggestions, Gary.

This is actually not a “real” root server, it’s a KVM server (of course). The CPU is an AMD EPYC 7702 with 2 dedicated cores per server@3,35GHz. I chose this server because the bandwith is unmetered and it’s a guaranteed 1GHz link. I don’t think I will ever be able to relay 125MB/s, but I will try my best. If I can only reach ~50MB/s before the CPU starts to grumble I will set up a second Tor process and a second relay.

I tuned my relay a bit today, using some of the tips from this conversation:

https://lists.torproject.org/pipermail/tor-relays/2010-August/000164.html

It’s not really up to date, but still useful to some extent.

Unfortunately I had to restart the Tor process, but my relay was already measured a few times and reaches spikes of 30MB/s. CPU usage is no issue at all yet, there is room for more. I can wait before I get the guard flag, this is not a race…

Thanks again for your help.

All the best.

PGP-Fingerorint: 95C6676453094B229C4EDB34ABA333DFF432E1DD

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This is actually not a "real" root server, it's a KVM server (of
course). The CPU is an AMD EPYC 7702 with 2 dedicated cores per
server@3,35GHz.

Since this is virtualization, make sure that features such as AES
acceleration are active.

The number of cores is not really relevant since Tor is not
multi-threaded. The EPYC 7702 can boost up to 3.35 GHz, check that it
reaches that under load.

Also since you have 2 cores, you can run two instances of Tor.

I chose this server because the bandwith is unmetered and it's a
guaranteed 1GHz link.

I assume you mean 1 Gbit/s.

···

Elias via tor-relays <tor-relays@lists.torproject.org> wrote:
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