Are you sure you need a 100GB heap? The stall could be a major GC. We run with an 8GB heap. We also run with Xmx equal to Xms, growing memory to the max was really time-consuming after startup.
What version of Java? What GC options? wunder Walter Underwood wun...@wunderwood.org http://observer.wunderwood.org/ (my blog) > On Jul 25, 2017, at 12:03 PM, David Hastings <hastings.recurs...@gmail.com> > wrote: > > I am trying to optimize a rather large index (417gb) because its sitting at > 28% deletions. However when optimizing, it stops at exactly 492.24 GB > every time. When I restart solr it will fall back down to 417 gb, and > again, if i send an optimize command, the exact same 492.24 GB and it stops > optimizing. There is plenty of space on the drive, and im running it > at -Xmx100000m -Xms7000m on a machine with 132gb of ram and 24 cores. I > have never ran into this problem before but also never had the index get > this large. Any ideas? > (solr 5.2 btw) > thanks, > -Dave