Thanks for your answer.

2013/4/10 Walter Underwood <wun...@wunderwood.org>

> We are using Amazon EC2 M1 Extra Large instances (m1.xlarge).
>
> http://aws.amazon.com/ec2/instance-types/
>
> wunder
>
> On Apr 9, 2013, at 3:35 PM, Furkan KAMACI wrote:
>
> > Hi Walter;
> >
> > Firstly thank for your detailed reply. I know that this is not a well
> > detailed question but I don't have any metrics yet. If we talk about your
> > system, what is the average RAM size of your Solr machines? Maybe that
> can
> > help me to make a comparison.
> >
> > 2013/4/10 Walter Underwood <wun...@wunderwood.org>
> >
> >> On Apr 9, 2013, at 3:06 PM, Furkan KAMACI wrote:
> >>
> >>> Are there anybody who can help me about how to guess the approximately
> >>> needed RAM for 5000 query/second at a Solr machine?
> >>
> >> No.
> >>
> >> That depends on the kind of queries you have, the size and content of
> the
> >> index, the required response time, how frequently the index is updated,
> and
> >> many more factors. So anyone who can guess that is wrong.
> >>
> >> You can only find that out by running your own benchmarks with your own
> >> queries against your own index.
> >>
> >> In our system, we can meet our response time requirements at a rate of
> >> 4000 queries/minute. We have several cores, but most traffic goes to a
> 3M
> >> document index. This index is small documents, mostly titles and
> authors of
> >> books. We have no wildcard queries and less than 5% of our queries use
> >> fuzzy matching. We update once per day and have cache hit rates of
> around
> >> 30%.
> >>
> >> We run new benchmarks twice each year, before our busy seasons. We use
> the
> >> current index and configuration and the queries from the busiest day of
> the
> >> previous season.
> >>
> >> Our key benchmark is the 95th percentile response time, but we also
> >> measure median, 90th, and 99th percentile.
> >>
> >> We are currently on Solr 3.3 with some customizations. We're working on
> >> transitioning to Solr 4.
> >>
> >> wunder
> >> --
> >> Walter Underwood
> >> wun...@wunderwood.org
> >>
> >>
> >>
> >>
>
> --
> Walter Underwood
> wun...@wunderwood.org
>
>
>
>

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