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

[Gary C. New]

The following are some of the more important config options that I use for such a small middle relay:




# Tor: A non-exit relay should be able to handle 7000 concurrent connections                                                                  



ulimit -n 65535




DirCache 0                                              

ExitRelay 0                     




# Note: The default MaxMeminQueues is 3/4 (i.e., 192MB) of Total System Memory (i.e., 256MB)                   

# Uncomment the following line to limit Tor to use less System Memory (i.e., 128MB)

MaxMemInQueues 192 MB               

                                        

Log notice file /tmp/torlog                             

Log notice syslog

RunAsDaemon 1                                           

DataDirectory /tmp/tor/torrc.d/.tordb                   

AvoidDiskWrites 1

—
This Message Originated by the Sun.
iBigBlue 63W Solar Array (~12 Hour Charge)
+ 2 x Charmast 26800mAh Power Banks
= iPhone XS Max 512GB (~2 Weeks Charged) 

    On Wednesday, November 10, 2021, 2:36:13 AM MST, failing.flyaway443--- via tor-relays <tor-relays at lists.torproject.org> wrote:  
 
 Hi Gary,
thank you for your response.
I think I just worry too much.
I watched my relay all the time today, I had bandwidth usage of 30MB/s at times and HTOP showed me a Load average of 0.29/0.29/0.30. I know that this is totally fine for a dual core. 
The relay is up and running for 3 days and 8 hours now and I already moved ~700GB in each direction (upload/download). I was just concerned because the VPS started crashing after 2 weeks solid uptime, but I should have set stricter bandwith limits. 
You can't really compare a VM with a root server, I don't think this will happen again. 
It's ok for me to invest a little more and have a fast and stable relay this way. The traffic was capped with the VPS plan, this was obviously a big disadvantage, now I can use as much traffic as I want with a 2,5Gbit link (1Gbit guaranteed).
For your info, the most important lines of my config:
SocksPort 0
Log notice file /var/log...
Log debug file /var/log...
ORPort 443
RelayBandwithRate 1000Mbit
RelayBandwithBurst 1000Mbit
Exit policy reject *:*
ContactInfo & Nickname set, of course... ;)

Is there anything I should change?

Thanks for your help!

Best Regards...


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