You can have a large number of cores, some people have multiple hundreds. Having multiple cores is preferred over having multiple JVMs since it's more efficient at sharing system resources. If you're running a 32 bit JVM, you are limited in the amount of memory you can let the JVM use, so that's a consideration, but otherwise use multiple cores in one JVM and give that JVM say, half of the physical memory on the machine and tune from there.
Best Erick On Sun, Jan 22, 2012 at 8:16 PM, Sujatha Arun <suja.a...@gmail.com> wrote: > Hello, > > We have in production a number of individual solr Instnaces on a single > JVM.As a result ,we see that the permgenSpace keeps increasing with each > additional instance added. > > I would Like to know ,if we can have solr cores , instead of individual > instances. > > > - Is there any limit to the number of cores ,for a single instance? > - Will this decrease the permgen space as the LIB is shared.? > - Would there be any decrease in performance with number of cores added? > - Any thing else that I should know before moving into cores? > > > Any help would be appreciated? > > Regards > Sujatha
