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Message from discussion STM criticism from Azul Systems
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Raoul Duke  
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 More options May 23 2008, 2:07 pm
From: "Raoul Duke" <rao...@gmail.com>
Date: Fri, 23 May 2008 11:07:27 -0700
Local: Fri, May 23 2008 2:07 pm
Subject: Re: STM criticism from Azul Systems
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> Are explicit locking designs free from such anomalies? I wouldn't think
> so.

paraphrase: the behaviour under load gets weird and tricky.

well, in some ways maybe that doesn't happen with locks: the question
of (depending on which STM system we're looking at) figuring out what
caused all the rollbacks vs. with locks, you can at least generally
quickly see that a given lock has 90% of all threads waiting on it
kind of thing. whereas you don't know what variable in the venn
diagram of overlapping transactions caused the retry?

tho i believe Rich previously said that Clojure would actually have a
way of finding that out!
http://groups.google.com/group/clojure/browse_thread/thread/2f73b80fd...


 
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