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From Adrien Grand <>
Subject Re: How to use concurrency efficiently
Date Tue, 02 Apr 2013 16:44:03 GMT
On Tue, Apr 2, 2013 at 4:39 PM, Igor Shalyminov
<> wrote:
> Yes, the number of documents is not too large (about 90 000), but the queries are very
hard. Although they're just boolean, a typical query can produce a result with tens of millions
of hits.

How can there be tens of millions of hits with only 90000 docs?

> Single-threadedly such a query runs ~20 seconds, which is too slow. therefore, multithreading
is vital for this task.

Indeed, that's super slow. Multithreading could help a little, but
maybe there is something to do to better index your data so that
queries get faster?


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