Re: Switching to XML

I have applied the attached documentation patch to HEAD and 8.2.X to
document the use of Tom's patch to openjade to get ouput in a reasonable
amount of time.

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Tom Lane wrote:
> Peter Eisentraut <peter_e(at)gmx(dot)net> writes:
> > Tom Lane wrote:
> >> Since jade does not go into this kind of spiral when producing html
> >> output from the same sources, I suggest that it's not jade's fault,
> >> but rather crummy coding in the sgml-to-tex conversion scripts it's
> >> using.
>
> > Right. I fixed that, so now it takes about 15 minutes to build the
> > whole thing.
>
> Actually, I just finished fixing what seems to be the underlying problem
> in jade: it's got a spectacularly bad implementation of linked lists.
> In PG-code terms, if the list is built by successive lappends(), then
> both lfirst() and lnext() take O(N) time for an N-element list, thus
> iterating through the list in the usual way is O(N^2) ... and not even
> with a reasonably small multiplier, because it stresses the hell out of
> memory allocation and garbage collection while it's at it. (Which may
> well mean that it's really more like O(N^3), since the garbage collector
> will iterate over every allocated object every so often.)
>
> With the patch it takes me about 5 minutes to do the jade step of the
> PDF build, using this morning's SGML sources. (I don't know how to set
> the TeX configuration to get the pdfjadetex steps to go through, so I
> dunno about total time.)
>
> However, I have no idea what it'll take to get this patch propagated
> into the copies people actually use, so your fix sounds good for the
> short term.
>
> regards, tom lane
>
> diff -cr openjade-1.3.2.orig/style/ELObj.cxx openjade-1.3.2/style/ELObj.cxx
> *** openjade-1.3.2.orig/style/ELObj.cxx Fri Jan 11 10:48:38 2002
> --- openjade-1.3.2/style/ELObj.cxx Sat Dec 9 21:58:36 2006
> ***************
> *** 1044,1049 ****
> --- 1044,1054 ----

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Bruce Momjian bruce(at)momjian(dot)us
EnterpriseDB http://www.enterprisedb.com

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