Chris Hegarty created LUCENE-10517:
--------------------------------------
Summary: Improve performance of SortedSetDV faceting by iterating
on class types
Key: LUCENE-10517
URL: https://issues.apache.org/jira/browse/LUCENE-10517
Project: Lucene - Core
Issue Type: Bug
Components: core/index
Affects Versions: 9.1
Reporter: Chris Hegarty
SortedSetDV faceting (and friends), can improve performance within tight loops
by using _invokevirtual_ (rather than _invokeinterface_). The C2 JIT compiler
can produce slightly more optimal code in this case, and since these loops are
very hot, the impact can be significant (in the order of 10-20%).
The code change amounts to using `SortedDocValues` or `SortedSetDocValues`
class types, rather than the `DocIdSetIterator` interface type, in loops
(specifically for invocation of `nextDoc()`, when the iterator type is known
and not wrapped.
This issue is in some ways similar, and builds upon, prior optimisations in
this area, like say LUCENE-5300.
--
This message was sent by Atlassian Jira
(v8.20.1#820001)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org
For additional commands, e-mail: issues-h...@lucene.apache.org
