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<H1>Re: [MUD-Dev] Massive Connections</H1>
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<LI><em>To</em>: <A HREF="mailto:mud-dev#kanga,nu">mud-dev#kanga,nu</A></LI>
<LI><em>Subject</em>: Re: [MUD-Dev] Massive Connections</LI>
<LI><em>From</em>: Christopher Kohnert <<A HREF="mailto:cjkohner#mail,uccs.edu">cjkohner#mail,uccs.edu</A>></LI>
<LI><em>Date</em>: Wed, 19 Apr 2000 21:15:29 -0400</LI>
<LI><em>Reply-To</em>: <A HREF="mailto:mud-dev#kanga,nu">mud-dev#kanga,nu</A></LI>
<LI><em>Sender</em>: <A HREF="mailto:mud-dev-admin#kanga,nu">mud-dev-admin#kanga,nu</A></LI>
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<PRE>
Kevin Scott London wrote:
>
> On Wed, 19 Apr 2000, Christopher Kohnert wrote:
>
> > Can anyone point me at some information regarding the ability to support
> > massive numbers simultaneous connections (read: 1000+). I've looked at
> > the various documents in the library (like the c10k one), but they
> > really aren't all that helpful. Does a server of this magnitude simply
> > require massive amounts of memory, or am I doing something terribly
> > wrong? Any suggestions as to how I can increase the number of
> > simultaneous (active) connections? I say 'active' here because I can
> > easily connect to many sockets if they aren't actually sending or
> > receiving any data, so it is my guess that the OS (in this case Linux)
> > is doing some buffering of sorts which eats up all my memory. I
> > couldn't get past 500 or so on a machine with 256 megs of RAM. Am I
> > wrong in thinking that the poor machine should be able to handle many
> > more than that?
> >
> > Thanks,
> > Chris
>
> It could be several things, but each connection requires an open
> descriptor which can be limited by the system. So depending on which OS
> you are on in this case linux, in tcsh it has a built in command called
> limit you will see something similar to:
> openfiles 1024
> or perhaps
> descriptors 64
> on another system. There are system limits which you can usually find
> out by setting it to unlimited, for example:
> limit openfiles unlimited
> Then type limit. So if you are forgetting to close descriptors, or exceed
> the limit then you would see that kind of behavior. Just guessing though,
> as it could be several factors.
>
> Kevin London
Yeah, I've thought of this. I can easily reach the 1024 default
descriptor limit in Linux, with 'inactive' sockets, but with 'active'
ones, I can't get past 500ish. So I know it's not the actual number of
file descriptors that is the problem, it's simply running out of memory
to handle all of them... Quite frustrating.
Chris
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<li><strong><A NAME="00486" HREF="msg00486.html">[MUD-Dev] [Mud-Dev]: Sushi Mud</A></strong>
<ul compact><li><em>From:</em> "Todd McKimmey" <rufus@wombatgames.com></li></ul>
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<LI><STRONG><A NAME="00483" HREF="msg00483.html">Re: [MUD-Dev] Massive Connections</A></STRONG>
<UL><LI><EM>From:</EM> Kevin Scott London <london@cs.utk.edu></LI></UL></LI>
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<ul><li>Thread context:
<BLOCKQUOTE><UL>
<LI><STRONG>Re: [MUD-Dev] Database back ends</STRONG>, <EM>(continued)</EM>
<ul compact>
<LI><strong><A NAME="00474" HREF="msg00474.html">Re: [MUD-Dev] Database back ends</A></strong>,
Greg Underwood <a href="mailto:gunderwood@donet.com">gunderwood@donet.com</a>, Wed 19 Apr 2000, 22:53 GMT
<UL>
<LI><strong><A NAME="00477" HREF="msg00477.html">Re: [MUD-Dev] Database back ends</A></strong>,
Quiet <a href="mailto:colborne@gte.net">colborne@gte.net</a>, Wed 19 Apr 2000, 23:15 GMT
</LI>
<LI><strong><A NAME="00481" HREF="msg00481.html">[MUD-Dev] Massive Connections</A></strong>,
Christopher Kohnert <a href="mailto:cjkohner@mail.uccs.edu">cjkohner@mail.uccs.edu</a>, Thu 20 Apr 2000, 01:34 GMT
<UL>
<LI><strong><A NAME="00483" HREF="msg00483.html">Re: [MUD-Dev] Massive Connections</A></strong>,
Kevin Scott London <a href="mailto:london@cs.utk.edu">london@cs.utk.edu</a>, Thu 20 Apr 2000, 02:52 GMT
<UL>
<LI><strong><A NAME="00484" HREF="msg00484.html">Re: [MUD-Dev] Massive Connections</A></strong>,
Christopher Kohnert <a href="mailto:cjkohner@mail.uccs.edu">cjkohner@mail.uccs.edu</a>, Thu 20 Apr 2000, 03:30 GMT
<UL>
<LI><strong><A NAME="00486" HREF="msg00486.html">[MUD-Dev] [Mud-Dev]: Sushi Mud</A></strong>,
Todd McKimmey <a href="mailto:rufus@wombatgames.com">rufus@wombatgames.com</a>, Thu 20 Apr 2000, 22:08 GMT
</LI>
</UL>
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</UL>
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</UL>
</LI>
<LI><strong><A NAME="00478" HREF="msg00478.html">Re: [MUD-Dev] Database back ends</A></strong>,
Kevin Littlejohn <a href="mailto:darius@connect.com.au">darius@connect.com.au</a>, Wed 19 Apr 2000, 23:15 GMT
</LI>
</ul>
</LI>
<LI><strong><A NAME="00468" HREF="msg00468.html">[MUD-Dev] defeating twinking through game mechanics</A></strong>,
S. Patrick Gallaty <a href="mailto:choke@sirius.com">choke@sirius.com</a>, Wed 19 Apr 2000, 18:55 GMT
<UL>
<LI><strong><A NAME="00488" HREF="msg00488.html">Re: [MUD-Dev] defeating twinking through game mechanics</A></strong>,
Travis S. Casey <a href="mailto:efindel@io.com">efindel@io.com</a>, Thu 20 Apr 2000, 22:08 GMT
</LI>
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