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<H1>Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</H1>
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<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>: Vadim Tkachenko <<A HREF="mailto:vt#freehold,crocodile.org">vt#freehold,crocodile.org</A>></LI>
<LI><em>Date</em>: Tue, 24 Mar 1998 19:46:29 -0600</LI>
<LI><em>Sender</em>: <A HREF="mailto:vt#freehold,crocodile.org">vt#freehold,crocodile.org</A></LI>
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<PRE>
Chris Gray wrote:
>
> [Matt Chatterley:]
>
> :A valid notion. My mud is being set up so that rather than the (standard
> :for LPmuds as far as I know) system of rebooting once per period of time
> :(usually 24-48 hours), it will reboot at any time within a period of 6
> :hours when there are no user connections open to the server.
>
> 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. If it crashes, restart with the latest consistent copy of the
> DB. What I do is to flush the DB caches to disk periodically, and when
> that is done copy the resulting files to a backup directory. If this
> is done without allowing any other actual writes to the DB files (changes
> to the DB are OK, so long as no disk writes are done), then you get a
> consistent snapshot of the world.
And one more reason to have the DB engine run in a different process
space than the MUD engine - both become more stable.
BTW, about JVM garbage collection - this solution seems to be better
also, because Java gc chokes sometimes if even system has more then
enough physical, not talking about virtual, memory available - I've seen
javadoc dying on the Swing packages on the Linux box with 128M RAM -
there was no swap used when it died.
Just another reason.
> Chris Gray cg#ami-cg,GraySage.Edmonton.AB.CA
--
Still alive and smile stays on,
Vadim Tkachenko <vt#freehold,crocodile.org>
--
UNIX _is_ user friendly, he's just very picky about who his friends are
</PRE>
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<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>
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<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>
<ul compact>
<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>
</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
<UL>
<LI><strong><A NAME="00820" HREF="msg00820.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>, Sun 22 Mar 1998, 18:34 GMT
<UL>
<LI><strong><A NAME="00824" HREF="msg00824.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>, Sun 22 Mar 1998, 19:24 GMT
</LI>
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