[tor-relays] [WARN]Failing because we have 4063 connections already. Please read doc/TUNING for guidance

[Julien ROBIN]

Hi,

I think it's a problem of amount of file descriptors : depending on the user, you have a limited amount of file descriptor that can be used (inside the tor's code, file descriptors are also used as handle/identifier for all network connections).

I think the max amount of it (for a given user) can be checked with the command "ulimit -n" as this user.

When I had 2 tor clients running (the second launched manually by a user named "tor2"), I modified the "limits.conf" file, adding those 2 lines at the end :

#*               soft    core            0
#root            hard    core            100000
#*               hard    rss             10000
#@student        hard    nproc           20
#@faculty        soft    nproc           20
#@faculty        hard    nproc           50
#ftp             hard    nproc           0
#ftp             -       chroot          /ftp
#@student        -       maxlogins       4
tor2             soft    nofile          100000
tor2             hard    nofile          100000

May be it needs a restart, or it doesn't apply to what have been started by "tor2" user before the modification
When tor is launched by /etc/init.d/tor start may be this haven't to be done manually.

That's all I know about it, hope it will help you to find and correct the problem !

Best regards,
Julien ROBIN

----- Mail original -----
De: tor-admin at torland.me
À: tor-relays at lists.torproject.org
Envoyé: Dimanche 21 Février 2016 12:39:59
Objet: [tor-relays] [WARN]Failing because we have 4063 connections	already. Please read doc/TUNING for guidance

Hi all,

since I upgraded the torland relay from 2.6.7 to 0.2.7.6 I get the following 
warnings:

09:20:30 [WARN] Failing because we have 4063 connections already. Please read 
doc/TUNING for guidance. [101144347 similar message(s) suppressed in last 
21600 seconds]

Google only spits out https://trac.torproject.org/projects/tor/ticket/16929 
which does not help me. I don't find the mentioned branch bug16929 in git.

Can someone please advise what has to be done to avoid the warning, or point 
me where I find can the file "doc/TUNING". 

Thanks

torland
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