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From: dewar@merv.cs.nyu.edu (Robert Dewar)
Subject: Re: Tasking performance between Ada83 and Ada95
Date: 1997/06/10
Message-ID: <dewar.865998036@merv>#1/1
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References: <dewar.865813228@merv>
 <19970610080401.EAA18524@ladder02.news.aol.com>
Organization: New York University
Newsgroups: comp.lang.ada
Date: 1997-06-10T00:00:00+00:00
List-Id: <comp.lang.ada>


Pascal says

<<So far, considering respective features of these two runtimes, I see no
difference. Both are switching tasks at the same user level. Both will
have
the same problems regarding blocking IOs, both will never take benefit of
multiprocessing, etc..
 >>

No, that's not the case, there is considerable extra overhead in the DCE
case. 

I think the closest comparison would be with FSU threads optimized for
no ATC, and no this version is not yet publicly released. 

But actually we find most people prefer the version of tasking that links
directly to system threads, even if it is less efficient.