[erlang-questions] Number of tcp/ip connections
Thu Jul 12 10:44:10 CEST 2007
selva rani wrote:
> Hi ,
> I am using Windows 2003.
Sorry, I got the impression that the actual server was running something
else since you said it also started to behave as described after
changing the registry values.
I'm afraid I don't have any experience of this kind of tweaking on
Windows 2003. You should look for the maximum number of open files ad
> On 7/11/07, Oscar Hellström <> wrote:
>> selva rani wrote:
>> > Hi all,
>> > I am running a server application in Windows 2003 with multiple
>> > clients connecting to server. In my application i would like to connect
>> > more
>> > than 1024 tcp/ip connections with the server. But when the connection
>> > exceeds 1024 i get enfile error in server. I tried changing the maximum
>> > number of connections using ERL_MAX_PORTS. I changed this using
>> > os:putenv("ERL_MAX_PORTS","value"). But even then i got enfile error.
>> > Then i
>> > changed the parameter TcpNumConnections (HKEY_LOCAL_MACHINE \System
>> > \CurrentControlSet \Services \Tcpip \Parameters) that limits the
>> > number of connections that TCP may have open simultaneously. After
>> > this parameter also the server is unable to accept more than 1024
>> > connections and generates enfile error. Tell me what should be done to
>> > increase the number of tcp/ip connections with the server (more than
>> What kind of server is this? Windows, Linux, BSD, Solaris?
>> There are usually settings for how many file descriptors one process may
>> open. These can also be changed for the user running the server process.
>> In some OS you also have a limits on sockets. This limit is however
>> still dependent on the number of fd:s.
>> If you tell me what OS you are using I (or someone else) can probably
>> point you to the settings.
>> > Thanks,
>> > Rani
>> > _______________________________________________
>> > erlang-questions mailing list
>> > http://www.erlang.org/mailman/listinfo/erlang-questions
>> Best Regards
>> Oscar Hellström,
>> Erlang Training and Consulting
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