clintropolis commented on a change in pull request #7629: Add basic tuning 
guide, getting started page, updated clustering docs
URL: https://github.com/apache/incubator-druid/pull/7629#discussion_r284052137
 
 

 ##########
 File path: examples/conf/druid/cluster/query/broker/jvm.config
 ##########
 @@ -1,7 +1,7 @@
 -server
--Xms24g
--Xmx24g
--XX:MaxDirectMemorySize=12g
+-Xms12g
+-Xmx12g
+-XX:MaxDirectMemorySize=6g
 
 Review comment:
   I think you've sized this to run on 8 core 32g machine, should you add some 
more merge buffers or larger buffer sizes to use up a bit more of the space, 
and any of the rest give to heap for breathing room? 

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