You can get parallelism by sharding -- use numShards=8 or whatever number
of CPUs you have.
In your performance analysis, you did not speak of memory; you spoke as if
there are only two factors at play -- CPU and Disk. Compression of data on
disk is used in order to allow the OS's disk cache to c
Thank you for working on the Solr performance issues raised here. LZ4 is a great solution, but let's look at how things are today. As far as I understand, uncompressed fields have been abandoned since version 4.1 (early 2013). At that time, 15,000 RPM SAS disks produced 350 MB/s or 150-180 iops a
