Might want to measure the single CPU performance of your EC2 instance. The last time I checked, my MacBook was twice as fast as the EC2 instance I was using.
wunder Walter Underwood wun...@wunderwood.org http://observer.wunderwood.org/ (my blog) > On May 1, 2017, at 6:24 PM, Chris Hostetter <hossman_luc...@fucit.org> wrote: > > > : tldr: Recently, I tried moving an existing solrcloud configuration from > : a local datacenter to EC2. Performance was roughly 1/10th what I’d > : expected, until I applied a bunch of linux tweaks. > > How many total nodes in your cluster? How many of them running ZooKeeper? > > Did you observe the heavy increase in system time CPU usage on all nodes, > or just the ones running zookeeper? > > I ask because if your speculation is correct and it is an issue of > clocksource, then perhaps ZK is where the majority of those system calls > are happening, and perhaps that's why you didn't see any similar heavy > system CPU load in ES? > > (Then again: at the lowest levels "lucene" really shouldn't care about > anything clock related at all Any "time" realted code would live in the > Solr level ... hmmm.) > > > -Hoss > http://www.lucidworks.com/
