<div>well, what i know about mnesia is that it's ets tables incase of ram copies tables and dets incase of disc copies tables.</div> <div> </div> <div>What i could asure to you is that mnesia is much more slower than mnesia.</div> <div> </div> <div>Note: Mnesia shouldn't be used in complex operations it's prefered to be used in easy operations that need fast processing in memory.</div> <div> </div> <div>Regards,</div> <div> </div> <div>Ayman Abolfadl<BR><BR><B><I>Philip Robinson <chlorophil@gmail.com></I></B> wrote:</div> <BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">On 27 Mar 2008 08:25:18 +0100, Bjorn Gustavsson <BJORN@ERIX.ERICSSON.SE>wrote:<BR>> The Erlang virtual machine needs to take two lock for each ets operation:<BR>> one lock on the table containing all ets tables, and one lock on the table<BR>> itself (since ets:info/1,2 may be called, the lock needs to be taken
even<BR>> if the table is private).<BR><BR>It sounds like there would be a similar slowdown effect with Mnesia + SMP too.<BR><BR>Is that correct?<BR><BR>Thanks,<BR>Philip<BR>_______________________________________________<BR>erlang-questions mailing list<BR>erlang-questions@erlang.org<BR>http://www.erlang.org/mailman/listinfo/erlang-questions<BR></BLOCKQUOTE><BR><p>
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