[LUCENENET-647] Performance decreasement migrating from 3.0.3 to 4.8.0

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: Lucene.Net 4.8.0

Environment

OS: Windows 10

CPU: Intel Core i7-8700 

RAM: 32Gb

• Assignee: Unassigned
• Reporter: Mo Dje
• Created: 05/Mar/20 15:21
• Updated: 01/Aug/20 17:16
• Resolved: 01/Aug/20 17:16

Description

Hello,

I'm currently migrating a project, that uses Lucene.Net, from .Net Framework to .Net Core.

I had to migrate from 3.0.3 version of Lucene to 4.8.0 (beta0007) but I noticed performance decreasement while measuring response time while requesting the database. The response time using Lucene 4.8.0 is two to three times higher than 3.0.3 version.

I read some forum topics where other users noticed this performance decreasement too. Are you aware about that? Do you plan to do something to improve performances of Lucene 4.8.0?

Best regards