Le 28/05/2015 12:52, Tomas Cohen Arazi a écrit :
El 28/5/2015 4:43 a. m., "Fridolin SOMERS" <[email protected]>
escribió:
Could this mean one should not get records from Zebra but directly from
database ? If getting the id of search results without getting the full
record is possible.
It is possible. But we should evaluate the trade-off from preparing the
record for display too. Because for indexing we do lots of stuff to the
record, stuff that should be done on rendering time with such a change.
What changes ?
For detail page, the record comes from database so it should not be
different for search results page.
Le 27/05/2015 21:02, Paul A a écrit :
At 08:29 PM 5/27/2015 +0200, Gaetan Boisson wrote:
Well as i said, the time is not the same depending on the number of
results, but in both cases, the number of results is anyway much
higher than the number of records taken into consideration for facets.
Your investigation indicates that:
In ZOOM->record, the time is spent in
my $_rec = Net::Z3950::ZOOM::resultset_record($this->_rs(), $which);
Maybe it's worth having a deeper look in this.
I looked into this to some extent in January this year; facets in 3.18
<http://navalmarinearchive.com/z_koha/search_speed_data.html> appeared
to be a limiting factor as it "swamped" one CPU core (and NYProf showed
this to be from ZOOM - see
<http://navalmarinearchive.com/z_koha/nytprof_318_s/index.html>
Regards -- Paul
Le 27/05/2015 12:56, Jonathan Druart a écrit :
Gaetan,
have a look at the metrics on bug 13665.
2015-05-27 11:45 GMT+01:00 Gaetan Boisson <[email protected]
:
Hello again all,
looking at speed issues there is one thing that i don't understand,
and i
feel some well versed developpers might have a better idea of what is
happening.
If you query zebra directly on the server, it's blazingly fast, no
matter
how big your database and how many results you get. (At least the
difference
is negligible, and we still get very low response times.)
But if you do a search in Koha that brings 20 000 results, it's
usualy 4
times faster (maybe more, sorry i don't have precise metrics here)
than a
search that brings up 1 000 000 results.
Is it consistent with your experience?
If it is, what would be the reason for this? My understanding is
that the
search code asks zebra for the first n records to display on the
first page,
and that facets are based on a number of result way below 20 000
anyway, so
the total number of results shouldn't really make a difference.
--
Gaetan Boisson
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Gaetan Boisson
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[email protected]
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