config setting and 2.2

So I didn't see

in the new 2.2 documentation (or I missed it cause I suck). I did however see


by lowering or increasing the merge thread pool is that how we can control or throttle segment merging?

Merging now auto throttles, so you shouldn't need to worry about changing anything here.
What's your reason for looking at this stuff?

Many thanks! Our indexing rate is growing. It's probably not nearly as much as some other applications, but we are growing and is currently at around 200k-220k per second. In 1.6.0 I found that indexing was being throttled because of the merges. So I found which has some tips. One of which was the above config =). Any other pointers, or documents that can be provided on improving indexing rates (from a software perspective) above all else in 2.2 would be greatly appreciated. The following settings have also always helped and they seem to still be around in 2.2: