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From Shawn Heisey <>
Subject Re: Optimal configuration for high throughput indexing
Date Mon, 04 May 2015 23:09:21 GMT
On 5/4/2015 2:36 PM, Vinay Pothnis wrote:
> But nonetheless, we will give the latest solrJ client + cloudSolrServer a
> try.
> * Yes, the documents are pretty small.
> * We are using G1 collector and there are no major GCs, but however, there
> are a lot of minor GCs sometimes going upto 2s per minute overall.
> * We are allocating 12G of memory.
> * Query rate: 3750 TPS (transactions per second)
> * I need to get the exact rate for insert/updates.
> I will make the solrJ client change first and give it a test.

Whether that 12GB heap size is for Solr itself or for your client code,
with a heap that large, you should be doing more tuning than simply
turning on G1GC.  I have spent quite a lot of time working on GC tuning
for Solr, and the results of that work can be found here:

I cannot claim that these are the best options you can find for Solr,
but they've worked well for me, and for others.


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