kk Blog —— 通用基础

echo 1 > /proc/sys/kernel/softlockup_panic

echo 0 > /proc/sys/net/mptcp/mptcp_enabled
echo 0 > /proc/sys/net/ipv4/tcp_timestamps
echo 0 >  /proc/sys/net/ipv4/tcp_max_tw_buckets
echo "4096 16384 256000" > /proc/sys/net/ipv4/tcp_wmem
echo "4096 16384 256000" > /proc/sys/net/ipv4/tcp_rmem
echo 6 > /proc/sys/net/ipv4/tcp_retries2
echo 0 > /proc/sys/net/ipv4/tcp_syncookies
# echo 128 > /proc/sys/net/ipv4/tcp_max_syn_backlog

echo 99 > /proc/sys/vm/swappiness
service irqbalance stop

#rm -rf /usr/local/share/aliyun-assist/

SELECT CONVERT(VARBINARY(MAX), '0xFFD8FFE000', 1);

select table_schema as '数据库', sum(table_rows) as '记录数', sum(truncate(data_length/1024/1024, 2)) as '数据容量(MB)', sum(truncate(index_length/1024/1024, 2)) as '索引容量(MB)' 
	from information_schema.tables group by table_schema order by sum(data_length) desc, sum(index_length) desc;

select table_schema as '数据库', table_name as '表名', table_rows as '记录数', truncate(data_length/1024/1024, 2) as '数据容量(MB)', truncate(index_length/1024/1024, 2) as '索引容量(MB)' 
	from information_schema.tables where table_schema='mysql' order by data_length desc, index_length desc;

select table_schema as '数据库', table_name as '表名', table_rows as '记录数', truncate(data_length/1024/1024, 2) as '数据容量(MB)', truncate(index_length/1024/1024, 2) as '索引容量(MB)' 
	from information_schema.tables order by data_length desc, index_length desc;

select table_schema as '数据库', sum(table_rows) as '记录数', sum(truncate(data_length/1024/1024, 2)) as '数据容量(MB)', sum(truncate(index_length/1024/1024, 2)) as '索引容量(MB)' 
	from information_schema.tables where table_schema='mysql';