Re: Slow performance for phrases with terms with high ttf

[Sjoerd Smeets]

There is a typo in my email. The term list should be like this:


   - "bill" -> df = 1.879.324, ttf = 14.145.950
   - "note" -> df = 8.479.826, ttf = 151.249.542
   - "sale" -> df = 7.557.685, ttf = 12.0948.163
   - "of" -> df = 21.244.060, ttf = 6.879.196.700


On Mon, Mar 25, 2024 at 8:56 AM Sjoerd Smeets <ssme...@gmail.com> wrote:

> Hi,
>
> We are experiencing quite a performance decrease when searching for
> phrases that have terms with a high ttf value.
>
> E.g. searching for "note of sale" is around 3 times slower (~10 sec) than
> the "bill of sale" `(~3 sec). This behaviour is consistent and can be
> reproduced als when we use other terms that have a high ttf. We are
> querying the unstemmed index.
>
> Terms (numDocs: 26220184):
>
>    - "bill" -> df = 1.879.324, ttf = 14.145.950
>    - "note" -> df = 8.479.826, ttf = 151.249.542
>    - "sale" -> df = 7.557.685, ttf = 12.0948.163
>    - "bill" -> df = 21.244.060, ttf = 6.879.196.700
>
>
> Is this the expected behaviour or is there something that can be
> tuned, like a cache setting?
>
> Thanks,
> Sjoerd
>