[rt-users] Slow Query

[Asif Iqbal]

I have few queries that are extremely slow. I am using RT 3.4.5, Perl
5.8.6, Solaris 10 x86, Apache/1.3.33 (Unix) mod_perl/1.29
mod_ssl/2.8.22 OpenSSL/0.9.7g, mysql 4.0.24, DBIx::SearchBuilder 1.40.
Is there any tweak to fix the slow querry?

Slow Query Logs:

# Query_time: 558  Lock_time: 0  Rows_sent: 0  Rows_examined: 2442535
SELECT COUNT(DISTINCT main.id) FROM Tickets main , Transactions
Transactions_1, Attachments Attachments_2  WHERE ((Transactions_1.O
bjectType = 'RT::Ticket')) AND ((main.EffectiveId = main.id)) AND
((main.Status != 'deleted')) AND ((main.Type = 'ticket')) AND ( (
 (Attachments_2.Content LIKE
'%txcomber%')AND(Attachments_2.TransactionId =
Transactions_1.id)AND(main.id = Transactions_1.ObjectId
) ) );

# Query_time: 535  Lock_time: 0  Rows_sent: 1  Rows_examined: 1733112
SELECT COUNT(DISTINCT main.id) FROM Tickets main , Transactions
Transactions_1, Attachments Attachments_2  WHERE ((Transactions_1.O
bjectType = 'RT::Ticket')) AND ((main.EffectiveId = main.id)) AND
((main.Status != 'deleted')) AND ((main.Type = 'ticket')) AND ( (
 (Attachments_2.Content LIKE
'%txcomber%')AND(Attachments_2.TransactionId =
Transactions_1.id)AND(main.id = Transactions_1.ObjectId
) ) );

# Query_time: 526  Lock_time: 0  Rows_sent: 1  Rows_examined: 1733130
SELECT COUNT(DISTINCT main.id) FROM Tickets main , Transactions
Transactions_1, Attachments Attachments_2  WHERE ((Transactions_1.O
bjectType = 'RT::Ticket')) AND ((main.EffectiveId = main.id)) AND
((main.Status != 'deleted')) AND ((main.Type = 'ticket')) AND ( (
 (Attachments_2.Content LIKE
'%txcomber%')AND(Attachments_2.TransactionId =
Transactions_1.id)AND(main.id = Transactions_1.ObjectId
) ) );

# Query_time: 528  Lock_time: 0  Rows_sent: 0  Rows_examined: 1733137
SELECT DISTINCT main.* FROM Tickets main , Transactions
Transactions_1, Attachments Attachments_2  WHERE
((Transactions_1.ObjectTyp
e = 'RT::Ticket')) AND ((main.EffectiveId = main.id)) AND
((main.Status != 'deleted')) AND ((main.Type = 'ticket')) AND ( (
(Attach
ments_2.Content LIKE '%txcomber%')AND(Attachments_2.TransactionId =
Transactions_1.id)AND(main.id = Transactions_1.ObjectId) ) )  O
RDER BY main.id ASC;

# Query_time: 2095  Lock_time: 0  Rows_sent: 1  Rows_examined: 0
SELECT GET_LOCK('Apache-Session-d7ca7d5da9351479f35fdc4b88daa536', 3600);

# Query_time: 541  Lock_time: 0  Rows_sent: 1  Rows_examined: 1733137
SELECT COUNT(DISTINCT main.id) FROM Tickets main , Transactions
Transactions_1, Attachments Attachments_2  WHERE ((Transactions_1.O
bjectType = 'RT::Ticket')) AND ((main.EffectiveId = main.id)) AND
((main.Status != 'deleted')) AND ((main.Type = 'ticket')) AND ( (
 (Attachments_2.Content LIKE
'%txcomber%')AND(Attachments_2.TransactionId =
Transactions_1.id)AND(main.id = Transactions_1.ObjectId
) ) );


RT logs:

[Fri Aug 17 13:16:13 2007] [warning]: Duplicate specification "" for
option "" (/opt/rt3/lib/RT.pm:287)
[Fri Aug 17 13:16:13 2007] [warning]: Queue->CustomFields is
deprecated, use Queue->TicketCustomFields instead at
(main:/usr/local/bin/rt:682) at /opt/rt3/lib/RT/Queue_Overlay.pm line
524. (/opt/rt3/lib/RT.pm:287)
[Fri Aug 17 13:16:15 2007] [warning]: Use of uninitialized value in
pattern match (m//) at /usr/local/lib/perl5/5.8.6/Getopt/Long.pm line
315. (/opt/rt3/lib/RT.pm:287)
[Fri Aug 17 13:16:15 2007] [warning]: Use of uninitialized value in
string eq at /usr/local/lib/perl5/5.8.6/Getopt/Long.pm line 317.
(/opt/rt3/lib/RT.pm:287)
[Fri Aug 17 13:16:15 2007] [warning]: Use of uninitialized value in
pattern match (m//) at /usr/local/lib/perl5/5.8.6/Getopt/Long.pm line
686. (/opt/rt3/lib/RT.pm:287)


-- 
Asif Iqbal
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