Paul, while you are running your tests, could you please compare this both scenarios:
- <use_zebra_facets>1</use_zebra_facets> - <use_zebra_facets>0</use_zebra_facets> Thanks PS: I have found that searchResults is too slow too. El Fri Jan 30 2015 at 19:34:41, Paul A (<[email protected]>) escribió: > At 04:53 PM 1/30/2015 -0500, Mark Tompsett wrote: > >Greetings, > > > >If there is no negative effect, and only positive effects, I'd be more > >than willing to submit a patch to default with a -T. :) > > I'm looking for "negatives" right now. Give me another little while, and > I'll do a bug/enhancement myself with all the numbers (a bit of a struggle, > NYTProf doesn't appear to like multi-threading.) > > Best -- Paul > > > >GPML, > >Mark Tompsett > > > >-----Original Message----- From: Paul A > >Sent: Friday, January 30, 2015 3:19 PM > >To: Fridolin SOMERS ; [email protected] > >Subject: Re: [Koha-devel] Search speed > > > >At 05:40 PM 1/30/2015 +0100, Fridolin SOMERS wrote: > >>You can launch Zebra multi-threaded using : > >>zebrasrv -T > > > >Fridolin - merci mille fois -- first impressions are most positive. I'll > >try and find time later today to quantify the results and put them in > >context of my previous tests. > > > >[vi /usr/share/koha/bin/koha-zebra-ctl.sh line 40 to ZEBRAOPTIONS="-T -v > >none,fatal,warn"] > > > >J'aurais bien aimer trouver ça tout seul ... mais encore une fois avec mes > >remerciments. > > > >Meilleures amitiés et a+ > >Paul > > > > > >>Le 30/01/2015 02:59, Robin Sheat a écrit : > >>>Paul A schreef op do 29-01-2015 om 19:39 [-0500]: > >>>>Facets appear to have a huge overhead in various components of Zebra, > >>>>to > >>>>the point where a single core of a multiple processor CPU gets > >>>>overwhelmed, > >>>>but does not share the load with other totally idle cores. > >>> > >>>That's not how multiprocessor systems work. > >>> > >>>They can only spread load amongst other cores if the software is > >>>multithreaded/multiprocess, which I suspect zebra isn't, at least within > >>>a single request. If it does all its work in a single thread, then it > >>>can't spread across multiple cores. > >>> > >>>>Intel tell me > >>>>that this is not fixable through any hardware/BIOS config and they are > >>>>not > >>>>aware of a Linux "standard library" that deals with processor > >>>>affinity. I've searched around a little and found mentions for c and > >>>>FORTRAN (marvelous old memories for me!) but so far nothing totally > >>>>specific for Perl. > >>> > >>>Zebra is not Perl, zebra is (I think) C. But still, unless it's written > >>>with multithreading in mind, you can't do anything about it. > >>>> > >>>>taskset and sched_setaffinity might be usable at system > >>>>level > >>> > >>>Unless you have very specific use cases (which you don't), these won't > >>>help. > >>>> > >>>>, and I might have a look at pthread_setaffinity_np.3.gz > >>> > >>>That will only help if you plan on rewriting zebra to use pthreads. > >>> > >>>I don't recommend rewriting zebra. > >>> > >>> > >>> > >>>_______________________________________________ > >>>Koha-devel mailing list > >>>[email protected] > >>>http://lists.koha-community.org/cgi-bin/mailman/listinfo/koha-devel > >>>website : http://www.koha-community.org/ > >>>git : http://git.koha-community.org/ > >>>bugs : http://bugs.koha-community.org/ > >> > >>-- > >>Fridolin SOMERS > >>Biblibre - Pôles support et système > >>[email protected] > >>_______________________________________________ > >>Koha-devel mailing list > >>[email protected] > >>http://lists.koha-community.org/cgi-bin/mailman/listinfo/koha-devel > >>website : http://www.koha-community.org/ > >>git : http://git.koha-community.org/ > >>bugs : http://bugs.koha-community.org/ > > > >--- > >Maritime heritage and history, preservation and conservation, > >research and education through the written word and the arts. > ><http://NavalMarineArchive.com> and <http://UltraMarine.ca> > > > >_______________________________________________ > >Koha-devel mailing list > >[email protected] > >http://lists.koha-community.org/cgi-bin/mailman/listinfo/koha-devel > >website : http://www.koha-community.org/ > >git : http://git.koha-community.org/ > >bugs : http://bugs.koha-community.org/ > > --- > Maritime heritage and history, preservation and conservation, > research and education through the written word and the arts. > <http://NavalMarineArchive.com> and <http://UltraMarine.ca> > > _______________________________________________ > Koha-devel mailing list > [email protected] > http://lists.koha-community.org/cgi-bin/mailman/listinfo/koha-devel > website : http://www.koha-community.org/ > git : http://git.koha-community.org/ > bugs : http://bugs.koha-community.org/ >
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