Zebra tends to be I/O bound -- we've seen it write enormous .zrs files to disk (~16G/query on large libraries). Bug 13665 mentions that searches could be taking upwards of 40 seconds to complete -- I think that we've seen searches time out and return no results at about 1 minute.
Is it possible to tune Zebra's space/time optimizations in any way so that it doesn't write such large files to disk? On Tue, Aug 23, 2016 at 5:38 AM, Jonathan Druart < jonathan.dru...@bugs.koha-community.org> wrote: > See bug 13665 - Retrieve facets from zebra is slow > To understand why and when use_zebra_facet=1 is slow > > 2016-08-22 21:31 GMT+01:00 Barton Chittenden <bar...@bywatersolutions.com > >: > > I haven't run into the issue with the dashes in idzebra-2.0 2.0.59, but I > > have run into this, when using ICU-Chains: > > > > Bug 16581 : ICU tokenization bug in idzebra-2.0 2.0.59-1 > > URL : https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id= > 16581 > > Priority : P5 - low > > Urgency : enhancement > > Status : NEW > > > > I also know that when use_zebra_facets was first introduced, it was > *very* > > slow -- I can't find any bugs about that though. It's possible that it > got > > so slow under idzebra-2.0 2.61 that the searches are timing out. > > > > It should be possible to set the logging for zebra so that you can see > the > > PQF queries: > > > > See > > > > Bug 15714 : Remove zebra.log from debian scripts and add optional log > levels > > URL : https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id= > 15714 > > Priority : P5 - low > > Urgency : enhancement > > Status : RESOLVED > > > > For setting the log levels > > > > And http://koha.1045719.n5.nabble.com/Improving-Zebra-logging- > td5861827.html > > > > For a general discussion of how to use them. > > > > ... This should give you some idea of what's failing, both in terms of > the > > dashes in 2.0.59 and the non-functional zebra facets under 2.0.61. > > > > My general feeling is that 2.0.59 is irredeemably broken by bug 16581, > and > > we need at least 2.0.60, but I don't have any experience with zebra > facets. > > > > --Barton > > > > > > > > On Mon, Aug 22, 2016 at 2:49 PM, Mark Tompsett <mtomp...@hotmail.com> > wrote: > >> > >> Greetings, > >> > >> Similar problem. I hope someone has a better solution than setting it to > >> 0. > >> > >> GPML, > >> Mark Tompsett > >> > >> -----Original Message----- > >> From: Philippe Blouin > >> Sent: Monday, August 22, 2016 2:40 PM > >> To: koha-devel@lists.koha-community.org > >> Subject: [Koha-devel] 16.05, zebra and jessie > >> > >> Hello! > >> > >> We're trying to find the correction combination. We're new on Jessie, > >> so we still have some tweaking needed... > >> > >> - By default, we get zebra 2.00.59 installed on Jessie through the > >> packages. > >> - On 16.05, we get some very bad results in the search when the itemtype > >> contains an hyphen (-), like 'A-DOC'. > >> - So we installed zebra 2.00.62. This fixes the search... > >> - But now we do not have facets. > >> - So we set <use_zebra_facets>0</use_zebra_facets> > >> - And now we have facets. But this feels... wrong? > >> > >> My dummy question: what is the supposedly correct version of Zebra on > >> Jessie ? > >> And we're we correct in setting the config to 0 ? > >> > >> Thanks > >> Blou > >> _______________________________________________ > >> Koha-devel mailing list > >> Koha-devel@lists.koha-community.org > >> 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/ > >> > >> _______________________________________________ > >> Koha-devel mailing list > >> Koha-devel@lists.koha-community.org > >> 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/ > > > > > > > > _______________________________________________ > > Koha-devel mailing list > > Koha-devel@lists.koha-community.org > > 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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