<!-- MHonArc v2.4.4 -->
<!--X-Subject: Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ?? -->
<!--X-From-R13: Dbff @vpbyy <weaNfg-naqerjf.np.hx> -->
<!--X-Date: Mon, 23 Mar 1998 08:09:18 +0000 -->
<!--X-Message-Id: Pine.SOL.3.96.980323080013.21059A-100000@maths -->
<!--X-Content-Type: text/plain -->
<!--X-Reference: 9803230245.8w3n@ami-cg.GraySage.Edmonton.AB.CA -->
<!--X-Head-End-->
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<html>
<head>
<title>MUD-Dev message, Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</title>
<!-- meta name="robots" content="noindex,nofollow" -->
<link rev="made" href="mailto:jrn#st-andrews,ac.uk">
</head>
<body background="/backgrounds/paperback.gif" bgcolor="#ffffff"
text="#000000" link="#0000FF" alink="#FF0000" vlink="#006000">
<font size="+4" color="#804040">
<strong><em>MUD-Dev<br>mailing list archive</em></strong>
</font>
<br>
[ <a href="../">Other Periods</a>
| <a href="../../">Other mailing lists</a>
| <a href="/search.php3">Search</a>
]
<br clear=all><hr>
<!--X-Body-Begin-->
<!--X-User-Header-->
<!--X-User-Header-End-->
<!--X-TopPNI-->
Date:
[ <a href="msg00838.html">Previous</a>
| <a href="msg00840.html">Next</a>
]
Thread:
[ <a href="msg00836.html">Previous</a>
| <a href="msg00845.html">Next</a>
]
Index:
[ <A HREF="author.html#00839">Author</A>
| <A HREF="#00839">Date</A>
| <A HREF="thread.html#00839">Thread</A>
]
<!--X-TopPNI-End-->
<!--X-MsgBody-->
<!--X-Subject-Header-Begin-->
<H1>Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</H1>
<HR>
<!--X-Subject-Header-End-->
<!--X-Head-of-Message-->
<UL>
<LI><em>To</em>: <A HREF="mailto:mud-dev#null,net">mud-dev#null,net</A></LI>
<LI><em>Subject</em>: Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</LI>
<LI><em>From</em>: Ross Nicoll <<A HREF="mailto:jrn#st-andrews,ac.uk">jrn#st-andrews,ac.uk</A>></LI>
<LI><em>Date</em>: Mon, 23 Mar 1998 08:08:39 +0000 (GMT)</LI>
</UL>
<!--X-Head-of-Message-End-->
<!--X-Head-Body-Sep-Begin-->
<HR>
<!--X-Head-Body-Sep-End-->
<!--X-Body-of-Message-->
<PRE>
On Sun, 22 Mar 1998, Chris Gray wrote:
> Why do you need to reboot at all? If your system doesn't leak memory,
> and if it can save its DB to disk consistently while running, then there
> is no need.
My MUD server, while not actually set up to reboot automatically, is
generally shutdown and restarted every week or so. The thing is, to
increase storage efficiency and decrease memory fragmentation and time
taken to go through lists, the program stores
objects/players/rooms/whatever in giant arrays, which it creates at
startup with enough space for all the objects/players/whatever in the
DB, and a few spares.
The program stores the entire DB in memory at once, we use pointers
instead of IDs to refer to objects/rooms/whatever. Since allocating a new
array and moving the data into it would change all the addresses of the
data, the pointers would become invalid, which of course is a bad thing!
Now, we could solve this problem by turning all the pointers into ID
references, moving the data about, and turning them all back again,
but that will come later, and it's simpler at the moment to restart
the server occaisionally...
Oh, and the server writes out the DB every half an hour...
--
_ __ __ __
/_) / / (_ (__
/\ /_/ __) /
______________/
</PRE>
<!--X-Body-of-Message-End-->
<!--X-MsgBody-End-->
<!--X-Follow-Ups-->
<HR>
<!--X-Follow-Ups-End-->
<!--X-References-->
<UL><LI><STRONG>References</STRONG>:
<UL>
<LI><STRONG><A NAME="00836" HREF="msg00836.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></STRONG>
<UL><LI><EM>From:</EM> cg#ami-cg,GraySage.Edmonton.AB.CA (Chris Gray)</LI></UL></LI>
</UL></LI></UL>
<!--X-References-End-->
<!--X-BotPNI-->
<UL>
<LI>Prev by Date:
<STRONG><A HREF="msg00838.html">Re: [MUD-Dev] Balancing Addicts -> soft vs. hard enforcement</A></STRONG>
</LI>
<LI>Next by Date:
<STRONG><A HREF="msg00840.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></STRONG>
</LI>
<LI>Prev by thread:
<STRONG><A HREF="msg00836.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></STRONG>
</LI>
<LI>Next by thread:
<STRONG><A HREF="msg00845.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></STRONG>
</LI>
<LI>Index(es):
<UL>
<LI><A HREF="index.html#00839"><STRONG>Date</STRONG></A></LI>
<LI><A HREF="thread.html#00839"><STRONG>Thread</STRONG></A></LI>
</UL>
</LI>
</UL>
<!--X-BotPNI-End-->
<!--X-User-Footer-->
<!--X-User-Footer-End-->
<ul><li>Thread context:
<BLOCKQUOTE><UL>
<LI><STRONG>Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</STRONG>, <EM>(continued)</EM>
<ul compact>
<ul compact>
<LI><strong><A NAME="00864" HREF="msg00864.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></strong>,
J C Lawrence <a href="mailto:claw#under,engr.sgi.com">claw#under,engr.sgi.com</a>, Mon 23 Mar 1998, 21:42 GMT
</LI>
<LI><strong><A NAME="00886" HREF="msg00886.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></strong>,
Vadim Tkachenko <a href="mailto:vt#freehold,crocodile.org">vt#freehold,crocodile.org</a>, Wed 25 Mar 1998, 05:28 GMT
<UL>
<LI><strong><A NAME="00902" HREF="msg00902.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></strong>,
Jon A. Lambert <a href="mailto:jlsysinc#ix,netcom.com">jlsysinc#ix,netcom.com</a>, Thu 26 Mar 1998, 05:03 GMT
</LI>
</UL>
</LI>
</ul>
<LI><strong><A NAME="00836" HREF="msg00836.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></strong>,
Chris Gray <a href="mailto:cg#ami-cg,GraySage.Edmonton.AB.CA">cg#ami-cg,GraySage.Edmonton.AB.CA</a>, Mon 23 Mar 1998, 07:07 GMT
<UL>
<LI><strong><A NAME="00839" HREF="msg00839.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></strong>,
Ross Nicoll <a href="mailto:jrn#st-andrews,ac.uk">jrn#st-andrews,ac.uk</a>, Mon 23 Mar 1998, 08:09 GMT
</LI>
<LI><strong><A NAME="00845" HREF="msg00845.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></strong>,
Matt Chatterley <a href="mailto:matt#mpc,dyn.ml.org">matt#mpc,dyn.ml.org</a>, Mon 23 Mar 1998, 18:05 GMT
</LI>
<LI><strong><A NAME="00882" HREF="msg00882.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></strong>,
Vadim Tkachenko <a href="mailto:vt#freehold,crocodile.org">vt#freehold,crocodile.org</a>, Wed 25 Mar 1998, 05:02 GMT
</LI>
</UL>
</LI>
</ul>
</LI>
<LI><strong><A NAME="00810" HREF="msg00810.html">World Persistence, flat files v/s DB v/s ??</A></strong>,
Ben Greear <a href="mailto:greear#cyberhighway,net">greear#cyberhighway,net</a>, Sun 22 Mar 1998, 05:39 GMT
<UL>
<LI><strong><A NAME="00811" HREF="msg00811.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></strong>,
Joel Dillon <a href="mailto:emily#cornholio,new.ox.ac.uk">emily#cornholio,new.ox.ac.uk</a>, Sun 22 Mar 1998, 12:30 GMT
</LI>
</UL>
</LI>
</UL></BLOCKQUOTE>
</ul>
<hr>
<center>
[ <a href="../">Other Periods</a>
| <a href="../../">Other mailing lists</a>
| <a href="/search.php3">Search</a>
]
</center>
<hr>
</body>
</html>
