"To reduce the GC impact from the storage engine, we considered different approaches and ultimately decided to develop a C++ storage engine to replace existing ones."
I wonder how the numbers would have looked with the new low latency GC for Hotspot (ZGC). https://wiki.openjdk.java.net/display/zgc/Main
Early results from SPECjbb2015 are impressive. https://youtu.be/tShc0dyFtgw?t=5m1s