I believe this warning describes a lack of available file descriptors, limiting the amount of connections your tor relay is able to make.
ulimit -n is exactly the command you want to use to raise that limit from your current 1024. What exactly that number should be, I couldn't say, but you could start at 10000 and raise / lower based on your needs and resources. Raising a similar limit on OpenBSD from the default to 20000 helped eliminate the error for me. On Dec 7, 2017 7:28 AM, "Logforme" <m7...@abc.se> wrote: > I run the non-exit relay Logforme (855BC2DABE24C861CD887DB9B2E95 > 0424B49FC34). > > Today I saw a new warning in my tor log file: > Dec 07 09:48:12.000 [warn] Failing because we have 32735 connections > already. Please read doc/TUNING for guidance. > > The relay runs on an old Debian Wheezy machine. Me being a Linux noob I > tried to read the doc/TUNING document (https://gitweb.torproject.org > /tor.git/tree/doc/TUNING) but the only information I deemed suitable for > me was "Use ulimit -n", which I ran and it reported "1024". I guess that's > not of interest for this warning. > > Over the years I have added some stuff to my sysctl.conf file that I have > picked up. Don't remember from where: > # Tor > net.core.rmem_max = 33554432 > net.core.wmem_max = 33554432 > net.ipv4.tcp_rmem = 4096 87380 33554432 > net.ipv4.tcp_wmem = 4096 65536 33554432 > net.core.rmem_default = 524287 > net.core.wmem_default = 524287 > net.core.optmem_max = 524287 > net.core.netdev_max_backlog = 300000 > net.ipv4.tcp_mem = 33554432 33554432 33554432 > net.ipv4.tcp_max_orphans = 300000 > net.ipv4.tcp_max_syn_backlog = 300000 > net.ipv4.tcp_fin_timeout = 4 > vm.min_free_kbytes = 65536 > net.ipv4.tcp_keepalive_time = 60 > net.ipv4.tcp_keepalive_intvl = 10 > net.ipv4.tcp_keepalive_probes = 3 > net.ipv4.ip_local_port_range = 1025 65530 > net.core.somaxconn = 30720 > net.ipv4.tcp_max_tw_buckets = 2000000 > net.ipv4.tcp_timestamps = 0 > net.ipv4.tcp_challenge_ack_limit = 999999999 > > None of the values seem to match the 32735 mentioned in the warning so I'm > at a loss for what I am supposed to change. > Anyone knowledgeable of these things that can give me some pointers? > > > _______________________________________________ > tor-relays mailing list > tor-relays@lists.torproject.org > https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-relays >
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