[Nel] Network Connections

Thu, 1 Mar 2001 15:41:15 -0800

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+oops:)
+
+It is actually http://www.stackless.com=20
+
+Here are more relavent urls:
+http://world.std.com/~wware/uthread.html
+http://www.eve-online.com/faq/faq_08.asp
+http://pdos.lcs.mit.edu/exo/
+
+We hope to use the MIT exokernel the last url refers to as a stripped =
+down os for the servers.
+
+Michael Warnock
+In-Orbit Entertainment
+  ----- Original Message -----=20
+  From: Michael Warnock=20
+  To: nel@nevrax.org=20
+  Sent: Thursday, March 01, 2001 2:38 PM
+  Subject: Re: [Nel] Network Connections
+
+
+    3) Windows did support something called micro threads, which had a =
+much lower over head than traditional threads.  These ( if i remember =
+correctly ) were designed specifically for scalable IO ( as in IIS ).  =
+Some time looking here may well yield some useful results.
+  I come from a nix background, but I wouldn't doubt that windows also =
+has had some implementation of microthreads.  The best current way to =
+use microthreads afaik is stackless python (stackless.org) which I (as =
+the game mechanics programmer) plan to use on the server side of the =
+game my company (In-Orbit Entertainment) is working on using the Nel =
+library.  Microthreads use an old and mostly forgotten programming =
+concept called continuations- a continuation is, in brief, the rest of a =
+program from any given point- that includes it's state and any branch of =
+code it might follow from there.  Stackless Python provides a way to =
+reference continuations- which requires it not to use the C stack for =
+framing(a neat trick u should read about).  Writing microthreads is as =
+simple as defining a bunch of functions and calling them at the same =
+time with a special call- they are executed in parralel within the same =
+thread and each requires almost no overhead above what they would if =
+executed in serial.  EVE (a commercial mmorpg) also plans to use =
+stackless as the basis for their game mechanics.  I dont have any =
+benchmarks on its network performance or scalability, but I plan to test =
+it soon.
+
+  Michael Warnock
+  In-Orbit Entertainment
+
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+	charset="iso-8859-1"
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+
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
+<HTML><HEAD>
+<META content=3D"text/html; charset=3Diso-8859-1" =
+http-equiv=3DContent-Type>
+<META content=3D"MSHTML 5.00.3103.1000" name=3DGENERATOR>
+<STYLE></STYLE>
+</HEAD>
+<BODY bgColor=3D#ffffff>
+<DIV><FONT face=3DArial size=3D2>oops:)</FONT></DIV>
+<DIV>&nbsp;</DIV>
+<DIV><FONT face=3DArial size=3D2>It is actually <A=20
+href=3D"http://www.stackless.com">http://www.stackless.com</A> =
+</FONT></DIV>
+<DIV>&nbsp;</DIV>
+<DIV><FONT face=3DArial size=3D2>Here are more relavent =
+urls:</FONT></DIV>
+<DIV><FONT face=3DArial size=3D2><A=20
+href=3D"http://world.std.com/~wware/uthread.html">http://world.std.com/~w=
+ware/uthread.html</A><BR><A=20
+href=3D"http://www.eve-online.com/faq/faq_08.asp">http://www.eve-online.c=
+om/faq/faq_08.asp</A><BR><A=20
+href=3D"http://pdos.lcs.mit.edu/exo/">http://pdos.lcs.mit.edu/exo/</A><BR=
+></FONT></DIV>
+<DIV><FONT face=3DArial size=3D2>We hope to use the MIT exokernel the =
+last url=20
+refers to as a stripped down os for the servers.</FONT></DIV>
+<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
+<DIV><FONT face=3DArial size=3D2>Michael Warnock</FONT></DIV>
+<DIV><FONT face=3DArial size=3D2>In-Orbit Entertainment</DIV></FONT>
+<BLOCKQUOTE=20
+style=3D"BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: =
+0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
+  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
+  <DIV=20
+  style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
+black"><B>From:</B>=20
+  <A href=3D"mailto:michael@in-orbit.net" =
+title=3Dmichael@in-orbit.net>Michael=20
+  Warnock</A> </DIV>
+  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
+href=3D"mailto:nel@nevrax.org"=20
+  title=3Dnel@nevrax.org>nel@nevrax.org</A> </DIV>
+  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Thursday, March 01, 2001 =
+2:38=20
+  PM</DIV>
+  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Re: [Nel] Network=20
+  Connections</DIV>
+  <DIV><BR></DIV>
+  <BLOCKQUOTE=20
+  style=3D"BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; =
+MARGIN-RIGHT: 0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
+    <DIV><FONT face=3DArial size=3D2>3) Windows did support something =
+called micro=20
+    threads, which had a much lower over head than traditional =
+threads.&nbsp;=20
+    These ( if i remember correctly ) were designed specifically for =
+scalable IO=20
+    ( as in IIS ).&nbsp; Some time looking here may well yield some =
+useful=20
+    results.</FONT></DIV></BLOCKQUOTE>
+  <DIV><FONT face=3DArial size=3D2>I come from a nix background, but I =
+wouldn't=20
+  doubt that windows also has had some implementation of =
+microthreads.&nbsp; The=20
+  best current way to use microthreads afaik is stackless python =
+(stackless.org)=20
+  which I (as the game mechanics programmer) plan to use on the server =
+side of=20
+  the game my company (In-Orbit Entertainment) is working on using the =
+Nel=20
+  library.&nbsp; Microthreads use an old and mostly forgotten =
+programming=20
+  concept called continuations- a continuation is, in brief, the rest of =
+a=20
+  program from any given point- that includes it's state and any branch =
+of code=20
+  it might follow from there.&nbsp; Stackless Python provides a way to =
+reference=20
+  continuations- which requires it not to use the C stack for framing(a =
+neat=20
+  trick u should read about).&nbsp; Writing microthreads is as simple as =
+
+  defining a bunch of functions and calling them at the same time with a =
+special=20
+  call- they are executed in parralel within the same thread and each =
+requires=20
+  almost no overhead above what they would if executed in serial.&nbsp; =
+EVE (a=20
+  commercial mmorpg) also plans to use stackless as the basis for their =
+game=20
+  mechanics.&nbsp; I dont have any benchmarks on its network performance =
+or=20
+  scalability, but I plan to test it soon.</FONT></DIV>
+  <DIV>&nbsp;</DIV>
+  <DIV><FONT face=3DArial size=3D2>Michael Warnock</FONT></DIV>
+  <DIV><FONT face=3DArial size=3D2>In-Orbit=20
+Entertainment</FONT></DIV></BLOCKQUOTE></BODY></HTML>
+
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+