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Choose four.A newly deployed replication master database has a 10/90 read to write ratio. The complete dataset is currently 28G but will never fluctuate beyond +-10%.
The database storage system consists of two locally attached PCI-E Enterprise grade disks (mounted as /data1 and /data2)
The server is dedicated to this MySQL Instance. System memory capacity is 64G. The my.cnf file contents are displayed here:
[mysqld] datadir=/data1/
Innodb_buffer_pool_size=28G innodb_log_file_size=150M
Which four changes provide the most performance improvement, without sacrificing data integrity?

Ainnodb-doublewrite=off

Binnodb_log_group_home_dir=/data2/

Cinnodb_log_file_size=1G

Dinnodb_undo_directory=/dev/shm

Elog-bin=/data2/

Finnodb_flush_log_at_trx_commit=0

Gsync_binlog=0

Hinnodb_buffer_pool_size=32G
I)disable-log-bin

正确答案:A (备注:此答案有误)

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