Hey all, over time ive adjusted and changed the solr Xms/Xmx various times with not too much thought aside from more is better, but ive noticed in many of the emails the recommended values are much lower than the numbers ive historically put in. i never really bothered to change them as the performance was always more than acceptable. Until now as well just got a memory upgrade on our solr nodes so figure may as well do it right.
so im sitting at around 580 gb core 150gb core 270gb core 300gb core depending on merges etc. with around 50k-100k searches a day depending on the time of year/school calendar the three live nodes each have 4tb of decent SSD's that hold the indexes, and now just went from 148gb to 288gb of memory. as of now we do an xms of 8gb and xmx of 60gb, generally through the dashboard the JVM hangs around 16gb. I know Xms and Xmx are supposed to be the same so thats the change #1 on my end, I am just concerned of dropping it from 60 as thus far over the last few years I have had no problems nor performance issues. I know its said a lot of times to make it lower and let the OS use the ram for caching the file system/index files, so my first experiment was going to be around 20gb, was wondering if this seems sound, or should i go even lower? Thanks, always good learning with this email group. -Dave
