mysql query taking more than 30 seconds - mysql

Question

Below is the output of "show full processlist" on my-sql command line. this query calculates the users total upload and download bandwidth for specified period of time. (the database is from freeradius). How can i make the query faster. [ Memory:150G , processr:8 centos 6.8]
15260415|radiusremote|panel.example.com:57526|radius|Query|35|Copying to tmp table
SELECT sum(acctinputoctets) as upload,sum(acctoutputoctets) as download
FROM radacct a
INNER JOIN
( SELECT acctuniqueid, MIN( radacctid ) radacctid
FROM radacct
WHERE username='nyjohan'
and acctstarttime between '2016-01-15 13:50:05'
AND '2016-08-07 13:16:36'
GROUP BY acctuniqueid
) b ON a.acctuniqueid = b.acctuniqueid
AND a.radacctid = b.radacctid
There are indexes created on the table , below is the output of indexes on table
mysql> show index from radacct;
+---------+------------+-----------------+--------------+-----------------+-----------+-------------+----------+--------+------+------------+---------+
| Table | Non_unique | Key_name | Seq_in_index | Column_name | Collation | Cardinality | Sub_part | Packed | Null | Index_type | Comment |
+---------+------------+-----------------+--------------+-----------------+-----------+-------------+----------+--------+------+------------+---------+
| radacct | 0 | PRIMARY | 1 | radacctid | A | 161791738 | NULL | NULL | | BTREE | |
| radacct | 1 | username | 1 | username | A | 15 | NULL | NULL | | BTREE | |
| radacct | 1 | framedipaddress | 1 | framedipaddress | A | 458333 | NULL | NULL | | BTREE | |
| radacct | 1 | acctsessionid | 1 | acctsessionid | A | 161791738 | NULL | NULL | | BTREE | |
| radacct | 1 | acctsessiontime | 1 | acctsessiontime | A | 46332 | NULL | NULL | YES | BTREE | |
| radacct | 1 | acctuniqueid | 1 | acctuniqueid | A | 161791738 | NULL | NULL | | BTREE | |
| radacct | 1 | acctstarttime | 1 | acctstarttime | A | 40447934 | NULL | NULL | YES | BTREE | |
| radacct | 1 | acctstoptime | 1 | acctstoptime | A | 80895869 | NULL | NULL | YES | BTREE | |
| radacct | 1 | nasipaddress | 1 | nasipaddress | A | 15 | NULL | NULL | | BTREE | |
+---------+------------+-----------------+--------------+-----------------+-----------+-------------+----------+--------+------+------------+---------+
Schema of table
mysql> describe radacct;
+----------------------+-------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+----------------------+-------------+------+-----+---------+----------------+
| radacctid | bigint(21) | NO | PRI | NULL | auto_increment |
| acctsessionid | varchar(32) | NO | MUL | | |
| acctuniqueid | varchar(32) | NO | MUL | | |
| username | varchar(64) | NO | MUL | | |
| groupname | varchar(64) | NO | | | |
| realm | varchar(64) | YES | | | |
| nasipaddress | varchar(15) | NO | MUL | | |
| nasportid | varchar(15) | YES | | NULL | |
| nasporttype | varchar(32) | YES | | NULL | |
| acctstarttime | datetime | YES | MUL | NULL | |
| acctstoptime | datetime | YES | MUL | NULL | |
| acctsessiontime | int(12) | YES | MUL | NULL | |
| acctauthentic | varchar(32) | YES | | NULL | |
| connectinfo_start | varchar(50) | YES | | NULL | |
| connectinfo_stop | varchar(50) | YES | | NULL | |
| acctinputoctets | bigint(20) | YES | | NULL | |
| acctoutputoctets | bigint(20) | YES | | NULL | |
| calledstationid | varchar(50) | NO | | | |
| callingstationid | varchar(50) | NO | | | |
| acctterminatecause | varchar(32) | NO | | | |
| servicetype | varchar(32) | YES | | NULL | |
| framedprotocol | varchar(32) | YES | | NULL | |
| framedipaddress | varchar(15) | NO | MUL | | |
| acctstartdelay | int(12) | YES | | NULL | |
| acctstopdelay | int(12) | YES | | NULL | |
| xascendsessionsvrkey | varchar(10) | YES | | NULL | |
+----------------------+-------------+------+-----+---------+----------------+
Explain output:-
explain SELECT sum(acctinputoctets) as upload,sum(acctoutputoctets) as download
FROM radacct a
INNER JOIN (
SELECT acctuniqueid, MIN( radacctid ) radacctid
FROM radacct
WHERE username='dave137' and acctstarttime between '2016-08-03 00:00:00' and '2016-08-07 14:47:54' GROUP BY acctuniqueid
)b ON a.acctuniqueid = b.acctuniqueid
AND a.radacctid = b.radacctid ;
+----+-------------+------------+--------+------------------------+----------+---------+-------------+-------+----------------------------------------------+
| id | select_type | table | type | possible_keys | key | key_len | ref | rows | Extra |
+----+-------------+------------+--------+------------------------+----------+---------+-------------+-------+----------------------------------------------+
| 1 | PRIMARY | <derived2> | ALL | NULL | NULL | NULL | NULL | 10 | |
| 1 | PRIMARY | a | eq_ref | PRIMARY,acctuniqueid | PRIMARY | 8 | b.radacctid | 1 | Using where |
| 2 | DERIVED | radacct | ref | username,acctstarttime | username | 66 | | 10164 | Using where; Using temporary; Using filesort |
+----+-------------+------------+--------+------------------------+----------+---------+-------------+-------+----------------------------------------------+
3 rows in set (9.91 sec)

Answer 1

For this query:
SELECT sum(acctinputoctets) as upload,sum(acctoutputoctets) as download
FROM radacct a INNER JOIN
(SELECT acctuniqueid, MIN( radacctid ) as radacctid
FROM radacct
WHERE username = 'dave137' and acctstarttime between '2016-08-03 00:00:00' and '2016-08-07 14:47:54'
GROUP BY acctuniqueid
) b
ON a.acctuniqueid = b.acctuniqueid AND a.radacctid = b.radacctid ;
I would recommend two indexes, one is already present: radacct(radacctid) and radacct(username, acctstarttime, acctuniqueid).
In addition, I would simplify the ON clause to:
ON a.radacctid = b.radacctid ;
radacctid is unique so there is no need for another condition.

Answer 2

Using a JOIN on a sub-query will slow down your query regardless of indexes. From what I can see this should do the same thing without needing to do the sub-join:
SELECT acctinputoctets as upload, acctoutputoctets as download
FROM radacct a
WHERE username = 'dave137'
and acctstarttime between '2016-08-03 00:00:00' and '2016-08-07 14:47:54'
ORDER BY radacctid
LIMIT 1