Thanks all who replied, lots of information to help us improve our use and management of Solr!
> > On 15 February 2017 at 08:04 Michael Kuhlmann <k...@solr.info> wrote: > > > The number of cores is not *that much* important compared to the index > size, but each core has its memory overhead. For instance, caches are > based on cores, so you're having 36 individual caches per type. > > Best, > Michael > > Am 14.02.2017 um 16:39 schrieb Leon STRINGER: > >> On 14 February 2017 at 14:44 Michael Kuhlmann <k...@solr.info> wrote: > >> > >> > >> Wow, running 36 cores with only half a gigabyte of heap memory is > >> *really* optimistic! > >> > >> I'd raise the heap size to some gigabytes at least and see how it's > >> working then. > >> > > I'll try increasing the heap size and see if I get the problem again. > > > > Is core quantity a big issue? As opposed to the size of the cores? Yes, > > there's > > 36 but some relate to largely inactive web sites so the average size > > (assuming > > my "Master (Searching)" way of calculating this is correct) is less than > > 4 MB. I > > naively assumed a heap size-related issue would result from larger data > > sets. > > > > Thanks for your recommendation, > > > > Leon Stringer > > > >
