Re: Atomic updates too slow in Solr 8 vs Solr 7

[Shawn Heisey]

On 5/30/23 15:34, Rahul Goswami wrote:
Environment details: - Java 11 on Windows server - Xms1536m Xmx3072m - 
Indexing client code running 15 parallel threads indexing in batches of 
1000 - using SimpleFSDirectoryFactory (since Mmap doesn't quite work 
well on Windows for our index sizes which commonly run north of 1 TB)

Don't change the directoryFactory.  You *WANT* Solr to use MMAP for your 
indexes.  Not using MMAP is likely to slow things down considerably. 
MMAP should work just fine on 64-bit Windows with 64-bit Java.  Which of 
course requires 64-bit hardware.

32 bit systems and software cannot properly deal with data larger than 
about 2GB.

Thanks,
Shawn