[xquery-talk] performance figures for xquery processors

[Makoto YUI]

"Michael Kay" <mhk at mhk.me.uk> wrote:

> > Iterative execution requires more memory spaces in total,
> 
> I don't understand this comment. What is the memory used for, and what
> strategy are you comparing with?

What I meant is that Iterator (that sequence yields) 
generates each item when next is called, so previous 
generated item may be newly generated by another iterator.

And, a sequence may yields Iterator more than once.

> > Last year, I was tried to benchmark several (free)
> > XQuery processors using XMark.
> 
> XMark is all about optimizing relational-style joins, it tells you very
> little about evaluation of path expressions.

Good or bad.., XMark seems to be de-factorized in recent tend.

Makoto

--
Nara Institute of Science and Technology (NAIST)
Makoto YUI <yuin405 AT gmail.com>
http://db-www.naist.jp/~makoto-y/proj/xbird/