I have the following metrics from mysql workbench

[![enter image description here][1]][1]

After I have set innodb-buffer-pool-size to `6G`, according to [this answer's][2] query on how to determine the recommended size.

While the used buffer usage was between `87%` and `93%` before I did the change in my.cnf (running with default values) it dramatically decreased now, so I'm wondering if 6G was too much. Especially because the `key efficiency` was between `97%` and `99%` before the change, which has lost some percents now. 

Should I bother more about key efficiency or buffer usage? Should I decrease the buffer usage again?

The server specs are

    Intel® Xeon® E5-1650 v3 
    Hexa-Core Haswell Hyper-Threading-Technologie
    128 GB DDR4 ECC RAM
    2 x 480 GB SATA 6 Gb/s Data Center Series SSD


 


  [1]: https://i.sstatic.net/QWlrl.png
  [2]: http://dba.stackexchange.com/questions/27328/how-large-should-be-mysql-innodb-buffer-pool-size