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From sausarkar <sausar...@ebay.com>
Subject Re: SolrCloud - Query performance degrades with multiple servers
Date Thu, 06 Dec 2012 23:13:25 GMT
I also did a test running a load directed to one single server in the cloud
and checked the CPU usage of other servers. It seems that even if there are
no load directed to those servers there is a CPU spike each minute. Did you
also di this test on the SolrCloud, any observations or suggestions?


In Reply To
Re: SolrCloud - Query performance degrades with multiple servers
Dec 05, 2012; 7:59pm — by   Mark Miller-3
This is just the std scatter gather distrib search stuff solr has been using
since around 1.4. 

There is some overhead to that, but generally not much. I've measured it at
around 30-50ms for a 100 machines, each with 10 million docs a few years
ago. 

So…that doesn't help you much…but FYI… 

- Mark 

On Dec 5, 2012, at 5:35 PM, sausarkar <[hidden email]> wrote: 

> We are using SolrCloud and trying to configure it for testing purposes, we 
> are seeing that the average query time is increasing if we have more than 
> one node in the SolrCloud cluster. We have a single shard 12 gigs 
> index.Example:1 node, average query time *~28 msec* , load 140 
> queries/second3 nodes, average query time *~110 msec*, load 420 
> queries/second distributed equally on three servers so essentially 140 qps 
> on each node.Is there any inter node communication going on for queries,
> is 
> there any setting on the Solrcloud for query tuning for a  cloud config
> with 
> multiple nodes.Please help. 
> 
> 
> 
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