One Tomcat with multicore. I have a list of about 2mio "real" queries that I'm 
firing at the cluster with jmeter. Reason for splitting up the index in rather 
small parts is that the maximum response time of 1 sec cannot be exceeded for 
any of those queries.



On Freitag, 13. Mai 2011 at 12:57, Grant Ingersoll wrote: 
> Is that 10 different Tomcat instances or are you using multicore? How are you 
> testing?
> 
> On May 13, 2011, at 6:08 AM, Frederik Kraus wrote:
> 
> > Hi, 
> > 
> > I'm having some serious problems scaling the following setup:
> > 
> > 48 CPU / Tomcat / ...
> > 
> > localhost/shard1
> > ...
> > localhost/shard10
> > 
> > When using all 10 shards in the query the req/s drop down to about 300 
> > without fully utilizing cpu (60% idle) or ram (disk i/o is zero - 
> > everything fits into the ram)
> > 
> > When only quering one shard I get about 5k-6k req/s 
> > 
> > Are there any known limits and/or work-arounds?
> > 
> > Thanks,
> > 
> > Fred.
> 
> --------------------------------------------
> Grant Ingersoll
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