Benchmarking The Performance Overhead To Linux's Proposed FGKASLR Security Feature
FGKASLR did provide some small performance hits to the LevelDB database performance for this open-source Google-developed key-value store used by the likes of Chrome.
For traditional databases like PostgreSQL there was also a slight hit even for read-only workloads.
RocksDB was also impacted by a small amount from the FGKASLR protection.