Feature: performance evaluation

[ShannonBase]

Summary

Using perf to evaluate the performance of ShannonBase, mainly focus on memory, such as memory bandwith usage, cache miss, etc.

and to evaluate the impact of options of gcc on performance.

ref: https://en.wikipedia.org/wiki/Cache_prefetching

[ShannonBase]

using perf to test metrics on memory.

1: create database xxx;

2:  create user.
CREATE USER 'testuser'@'localhost' IDENTIFIED BY 'testpass';
GRANT ALL PRIVILEGES ON testdb.* TO 'testuser'@'localhost';
FLUSH PRIVILEGES;

3:sysbench --mysql-host=127.0.0.1  --mysql-db=testdb --mysql-user=testuser --mysql-password=testpass --table-size=1000000 --tables=10 /usr/share/sysbench/oltp_read_write.lua prepare