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From Jamie <ja...@mailarchiva.com>
Subject Re: search performance
Date Tue, 03 Jun 2014 07:24:00 GMT
Toke

Thanks for the contact. See below:

On 2014/06/03, 9:17 AM, Toke Eskildsen wrote:
> On Tue, 2014-06-03 at 08:17 +0200, Jamie wrote:
>> Unfortunately, in this instance, it is a live production system, so we
>> cannot conduct experiments. The number is definitely accurate.
>>
>> We have many different systems with a similar load that observe the same
>> performance issue. To my knowledge, the Lucene integration code is
>> fairly well optimized.
> It is possible that the extreme slowness is a combination of factors,
> but with a bit of luck it will boil down to a single thing. Standard
> procedure it to disable features until it performs well, so
>
> - Disable running updates
No can do.
> - Limit page size
Done this.
> - Limit lookup of returned fields
Done this.
> - Disable highlighting
No highlighting.
> - Simpler queries
They are as simple as possible.
> - Whatever else you might think of
Our application has been using Lucene for seven years. It has been 
constantly optimized over that period.

I'll conduct further testing...
>
> At some point along the way I would expect a sharp increase in
> performance.
>
>> I've requested access to the indexes so that we can perform further testing.
> Great.
>
> - Toke Eskildsen, State and University Library, Denmark
>
>
>


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