As far as I understand, a maximum limit of 4096 open file descriptors is 
sufficient for most users.

This limit should be raised to 8192 for floodfills, but a router becomes a 
floodfill only if 2 conditions are met:
- it has a sufficiently high bandwidth
- the user has set "floodfill = true" in i2pd.conf (by default it is false)

So this feature must be enabled explicitly, and AFAIK most routers are not 
floodfills.

In your case, even 8192 doesn't seem enough, because you're torrenting. You're 
certainly not the only one to use the I2P network for anonymous file sharing, 
but IMHO this is not the most generic use case.


> why are yo uignoring my reply? 4096 doesn't cover everyone like I said people
> can become floodfills automatically and floodfills means 8192
>
>
>On Sun, January 28, 2024 7:52 pm, Klemens Nanni wrote:
>> On Sun, Jan 28, 2024 at 06:15:52PM +0000, Stuart Henderson wrote:
>>
>>> On 2024/01/27 21:54, open...@systemfailure.net wrote:
>>>
>>>> According to i2pd's online documentation [1], the maximum number of open
>>>> file descriptors is 4096 for a regular node, and 8192 for a floodfill
>>>> [2].
>>>>
>>>>
>>>> I have never measured how many FDs i2pd is really using, but this
>>>> software for sure needs a lot of them.
>>>>
>>>> So I guess we can set 4096 as default value, and inform users in the
>>>> README file that this value should be raised to 8192 for floodfills.
>>>>
>>>
>>> 4096 doesn't seem too unreasonable, it's below default levels of
>>> kern.maxfiles, so if that's enough for the software I'd be happy with 
>>> setting
>>> that in a login.conf.d file.
>>
>> Thanks for all you feedback.
>> OK?
>>
>>
>>
>> Index: Makefile
>> ===================================================================
>> RCS file: /cvs/ports/net/i2pd/Makefile,v
>> diff -u -p -r1.22 Makefile --- Makefile      13 Jan 2024 16:21:39 -0000      
>> 1.22
>> +++ Makefile 24 Jan 2024 22:21:26 -0000
>> @@ -3,6 +3,7 @@ COMMENT =    client for the I2P anonymous n
>> GH_ACCOUNT = PurpleI2P
>> GH_PROJECT = i2pd
>> GH_TAGNAME = 2.50.2
>> +REVISION =  0
>>
>>
>> CATEGORIES = net
>> HOMEPAGE =   https://i2pd.website
>> Index: pkg/PLIST
>> ===================================================================
>> RCS file: /cvs/ports/net/i2pd/pkg/PLIST,v
>> diff -u -p -r1.12 PLIST --- pkg/PLIST        20 Dec 2023 22:19:44 -0000      
>> 1.12
>> +++ pkg/PLIST        24 Jan 2024 22:30:37 -0000
>> @@ -237,3 +237,7 @@ share/examples/i2pd/tunnels.conf
>> @owner _i2pd
>> @group _i2pd
>> @sample ${SYSCONFDIR}/i2pd/tunnels.conf
>> +@owner
>> +@group
>> +share/examples/login.conf.d/i2pd
>> +@sample ${SYSCONFDIR}/login.conf.d/i2pd
>> Index: pkg/README
>> ===================================================================
>> RCS file: /cvs/ports/net/i2pd/pkg/README,v
>> diff -u -p -r1.3 README --- pkg/README       8 Nov 2022 12:41:42 -0000       
>> 1.3
>> +++ pkg/README       28 Jan 2024 19:51:52 -0000
>> @@ -5,20 +5,7 @@
>> Resource Limits: File Descriptors
>> =================================
>>
>>
>> -By default, the i2pd process runs in the login(1) class of "daemon".
>> -The default limits on file descriptors are insufficient to run i2pd; instead
>> you -should put the _i2pd user and process in their own login(1) class with
>> tuned -resources.
>> -You should also raise the system-wide maxfiles limit.
>> +You should raise the system-wide maxfiles limit:
>>
>>
>> -1. Configure i2pd login class in the login.conf(5) file:
>> -
>> -        i2pd:\
>> -                :openfiles-cur=8192:\
>> -                :openfiles-max=8192:\
>> -                :tc=daemon:
>> -
>> -2. Adjust kern.maxfiles, if needed:
>> -
>> -    # sysctl kern.maxfiles=16000
>> -    # echo "kern.maxfiles=16000" >> /etc/sysctl.conf
>> +    # sysctl kern.maxfiles=8192
>> +    # echo "kern.maxfiles=8192" >> /etc/sysctl.conf
>> Index: pkg/i2pd.login
>> ===================================================================
>> RCS file: pkg/i2pd.login
>> diff -N pkg/i2pd.login --- /dev/null 1 Jan 1970 00:00:00 -0000
>> +++ pkg/i2pd.login   28 Jan 2024 19:51:32 -0000
>> @@ -0,0 +1,4 @@
>> +i2pd:\
>> +    :openfiles-cur=4096:\
>> +    :openfiles-max=4096:\
>> +    :tc=daemon:
>>
>>

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