[mysqld]
local-infile=0
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
bind-address=127.0.0.1

# What I added below
key_buffer_size=512M
#sort_buffer_size=4M <-- I commented this, it seems better now
#read_buffer_size=4M <-- I commented this, it seems better now
innodb_thread_concurrency=0
innodb_buffer_pool_size=9G
tmp_table_size=128M
max_heap_table_size=128M
skip-name-resolve
query_cache_size=64M

SELECT CEILING(Total_InnoDB_Bytes*1.6/POWER(1024,3)) RIBPS FROM
    (SELECT SUM(data_length+index_length) Total_InnoDB_Bytes
    FROM information_schema.tables WHERE engine='InnoDB') A;
+-------+
| RIBPS |
+-------+
|     9 |
+-------+