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Von: Christian Grün
Gesendet: Montag, 11. Mai 2020 13:02
An: BIRKNER Michael
Cc: basex-talk@mailman.uni-konstanz.de
Betreff: Re: [basex-talk] Performance loss
Hi Michael,
I checked your use case in greater depth, and I found the change in
our code that caused the slowdown [1].
A) The nutshell answer : Just use the attached query!
B) The extensive technical answer:
• In previous versions of BaseX, most paths in FLWOR expressions were
»inlined« in the
------
> *Von:* Christian Grün
> *Gesendet:* Freitag, 8. Mai 2020 14:24
> *An:* BIRKNER Michael
> *Cc:* basex-talk@mailman.uni-konstanz.de
> *Betreff:* Re: [basex-talk] Performance loss between version 9.2.4 and
> 9.3.2 when executing specific xQuery
>
&
__
Von: Christian Grün
Gesendet: Freitag, 8. Mai 2020 14:24
An: BIRKNER Michael
Cc: basex-talk@mailman.uni-konstanz.de
Betreff: Re: [basex-talk] Performance loss between version 9.2.4 and 9.3.2 when
executing specific xQuery
And I’m always delighted to be confronted with library use case. BaseX
-
>
> *Die AK setzt sich seit 100 Jahren für Gerechtigkeit ein. Damals. Heute.
> Für immer.*
>
> *arbeiterkammer.at/100 <https://arbeiterkammer.at/100>**
> <https://arbeiterkammer.at/100>* <https://w.ak.at/zukunftsprogramm>
>
>
>
And even more curiously, we are also working in this very same time on
handling fetches from OAI-PMH sources! :-D
M.
On 08/05/20 13:37, Imsieke, Gerrit, le-tex wrote:
Just saying that I find it sooo interesting to learn at which places
and for which purposes BaseX is being employed. Have a
Just saying that I find it sooo interesting to learn at which places and
for which purposes BaseX is being employed. Have a nice weekend!
On 08.05.2020 13:31, BIRKNER Michael wrote:
Hi Christian,
thank you for your answers. As you can guess the queries I sent in my
original email are just
n für Gerechtigkeit ein.
Damals. Heute. Für immer.
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Von: Christian Grün
Gesendet: Freitag, 8. Mai 2020 12:37
An: BIRKNER Michael
Cc: basex-
I tried to reproduce your use case by creating some sample data (with a few
millions of entries), but both the query plan and the performance were
similar in 9.2.4 and the current 9.3.3 beta version.
And I am still trying to understand your example query. Is it correct that
the attribute of your
Thanks, Michael, for the valuable observation. It might be that another
newly integrated optimization proves to be detrimental to your existing
query. I’ll try to find the culprit.
Just a minor question: In db2, a single document seems to be stored. Does
this mean that only one record is assigned
Hi,
I am observing a performance loss between BaseX versions 9.2.4 (which I was
using so far) and 9.3.2 (to which I updated recently) when executing an xQuery
like this:
---
(: Open 2 databases and get all s :)
let $recsFromDb1 := db:open('db1')/record
let $recsFromDb2 :=
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