Just out of curiosity are you using metal? And if so ran any disk io tests to 
see if you may have a hardware problem on any of the nodes?  A document won’t 
be available until all the nodes have it so it just takes one to get slow to 
slow you down

> On Dec 7, 2022, at 9:45 AM, Matias Laino <matias.la...@passare.com.invalid> 
> wrote:
> 
> 
> Hi all,
>  
> I recently had an issue with very high cpu usage on our Testing SolrCloud 
> cluster when sending data to Solr, I’ve tried several which reduced the usage 
> of CPU, now our testing SolrCloud is under an 8 core machine with 32 gb de 
> RAM (recently changed the heap to 21g as a test).
> When we push data to solr, it takes a couple of minutes for that document to 
> be available on search results, I’ve tried everything and cannot find out 
> what is going on, it was working perfectly fine until last week when it 
> suddenly started having this delay.
>  
> Our configuration for NRT is very aggressive, 60s of auto commit with open 
> searcher false and 1s for auto soft commit, but it doesn’t matter what 
> configuration I try, it will always take a couple of minutes to have the new 
> document available on search results.
> 
> I’ve tried modifying the cache configuration to use Caffeine, tried removing 
> max warming searchers values, tried modifying autoWarmCount to different 
> values and even tried, and still the same issue, it’s almost like my 
> configuration doesn’t matter. 
> 
> We are using a Solr 8.11 install in SolrCloud mode, 2 nodes, 1 Zookeeper 
> node. On each node we have 6 collections of around 10-11M records each 
> (numbers didn’t change much before and after this issue started). The total 
> amount of disk spaced used is 20.4gb, our heap is now 21gb.
> 
> I’m kind of desperate since I’ll be on vacation starting the end of next week 
> and I haven’t been able to find out what is wrong with this, my fear is if 
> this happens to our production server, we won’t be able to know how to fix it 
> other than reinstalling Solr from scratch.
> 
> Our prod server only has 1 collection of 11gb and is under a 4 core servers 
> with 16 gb of ram (8gb heap setup).
> 
> Any help or pointer will be highly appreciated as I’m desperate. 
> 
> Thanks in advance!
>  
> MATIAS LAINO | DIRECTOR OF PASSARE REMOTE DEVELOPMENT
> matias.la...@passare.com | +54 11-6357-2143
> 
>  

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