Can you provide more info? What is slower, is it indexing, search or both? Do you know what gets deoptimized specifically?
On Fri, Nov 22, 2024 at 8:27 PM MyCoy Z <mycoy.zh...@gmail.com> wrote: > Hello: > > We're migrating our engine from Lucene7 to 9. > We're using Lucene9.8 and Microsoft JDK17 > > After the migration, we observed performance degradation on some hosts for > some applications. Profiling shows this is caused by the JIT deoptimization. > The scale is uncertain. For small applications, no such problem. For a > large application, only a few hosts, and restarting them can fix the > issue. However for another larger application, the problem happens more > frequently; restarting would only work once, after another deployment the > problem can occur again. > > Since there is no such issue while on Lucene7, it seems this problem has a > strong correlation with Lucene9. > > I'm just wondering if anyone in the community has any experience on this, > and any suggestions? > > Thanks > -- Adrien
