Did you re-work your schema at all?  There are new primitive types,
new lucene versions, DocValue's, etc

On Wed, Sep 16, 2020 at 12:40 PM Keene Chen <kc...@mintel.com> wrote:
>
> Hi,
>
> Thanks for pointing that out. I've linked the images below:
>
> solr5_response_times.png
> <https://gcdt-solr-tests-public.s3-eu-west-1.amazonaws.com/solr5_response_times.png>
>
> solr8_response_times.png
> <https://gcdt-solr-tests-public.s3-eu-west-1.amazonaws.com/solr8_response_times.png>
>
> solr5_throughput.png
> <https://gcdt-solr-tests-public.s3-eu-west-1.amazonaws.com/solr5_throughput.png>
>
> solr8_throughput.png
> <https://gcdt-solr-tests-public.s3-eu-west-1.amazonaws.com/solr8_throughput.png>
>
> Regards,
> Keene
>
>
> On Wed, 16 Sep 2020 at 09:09, Colvin Cowie <colvin.cowie....@gmail.com>
> wrote:
>
> > Hello,
> >
> > Your images won't appear on the mailing list. You'll need to post them
> > elsewhere and link to them.
> >
> > On Tue, 15 Sep 2020 at 09:44, Keene Chen <kc...@mintel.com> wrote:
> >
> > > Hi Solr users community,
> > >
> > >
> > > We have been doing some performance tests on Solr 5.5.2 and Solr 8.5.2 as
> > > part of an upgrading process, and we have noticed some reduced
> > performance
> > > for certain types of requests, particularly those that requests a large
> > > number of rows, eg. 10000. Would anyone have an explanation as to why the
> > > performance degrades, and what areas can be looked at in order to improve
> > > its performance?
> > >
> > > The performance test example below was carried out using 18000 of such
> > > queries, running at a constant throughput as specified by the label in
> > the
> > > x-axis. “Rpm” here stands for “requests per minute”.
> > >
> > > Solr 8.5’s maximum response times are consistently better. However, the
> > > 95th and 99th percentile are comparably worse than Solr 5.5’s response
> > > times.
> > > [image: image.png]
> > > [image: image.png]
> > >
> > > The maximum throughput for solr 8.5 is reached sooner than Solr 5.5 at
> > > around 4 requests per second.
> > >
> > >
> > > [image: image.png]
> > > [image: image.png]
> > >
> > > Regards,
> > > Keene
> > >
> > > --
> > >
> > >
> > > Keene Chen  | Senior Software Developer
> > >
> > >
> > >
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