I think EFS is a terribly slow file system to use for Solr, who recommended it? 
:)
Better use one EBS per node.
Not sure if the gradually slower performance is due to EFS though. We need to 
know more about your setup to get a clue. What role does stunnel play here? How 
are you indexing the content etc.

Jan

> 23. feb. 2024 kl. 19:58 skrev Walter Underwood <wun...@wunderwood.org>:
> 
> First, a shared disk is not a good idea. Each node should have its own local 
> disk. Solr makes heavy use of the disk.
> 
> If the indexes are shared, I’m surprised it works at all. Solr is not 
> designed to share indexes.
> 
> Please share the full query string.
> 
> wunder
> Walter Underwood
> wun...@wunderwood.org
> http://observer.wunderwood.org/  (my blog)
> 
>> On Feb 23, 2024, at 10:01 AM, Beale, Jim (US-KOP) 
>> <jim.be...@hibu.com.INVALID> wrote:
>> 
>> I have a Solrcloud installation of three servers on three r5.xlarge EC2 with 
>> a shared disk drive using EFS and stunnel.
>> 
>> I have documents coming in about 20000 per day and I am trying to perform 
>> indexing along with some regular queries and some special queries for some 
>> new functionality.
>> 
>> When I just restart Solr, these queries run very fast but over time become 
>> slower and slower.
>> 
>> This is typical for the numbers. At time1, the request only took 2.16 sec 
>> but over night the response took 18.137 sec. That is just typical.
>> 
>> businessId, all count, reduced count, time1, time2
>> 7016274253,8433,4769,2.162,18.137
>> 
>> The same query is so far different. Overnight the Solr servers slow down and 
>> give terrible response. I don’t even know if this list is alive.
>> 
>> 
>> Jim Beale
>> Lead Software Engineer
>> hibu.com
>> 2201 Renaissance Boulevard, King of Prussia, PA, 19406
>> Office: 610-879-3864
>> Mobile: 610-220-3067
>> 
>> 
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