[rt-users] TicketHistory slow on 4.2.0

[Tod Detre]

On Wed, Oct 23, 2013 at 2:25 PM, Alex Vandiver <alexmv at bestpractical.com>wrote:

> On Wed, 2013-10-23 at 13:47 -0400, Tod Detre wrote:
> > I've had the mysql slow log on, but it does not show any slow
> > queries.
>
> That is surprising to me, as the symptoms of "first load is slow,
> successive ones are fast" sounds like the MySQL query cache to me, as
> I'm not aware of any other caching layers in that area.  I'd
> double-check your slow query log threshold and relevant settings.


Sorry, about that I am seeing slow queries, but not for every time I see
the slow history problem. Here is an example of the slow queries we're
seeing:

# User at Host: rt4[rt4] @ rt4.xxx.net [xxx.xxx.xxx.xxx]
# Query_time: 0.040443  Lock_time: 0.000247 Rows_sent: 10  Rows_examined:
26134
SET timestamp=1382560324;
SELECT DISTINCT main.* FROM Tickets main JOIN Groups Groups_1  ON (
Groups_1.Domain = 'RT::Ticket-Role' ) AND ( Groups_1.Instance = main.id )
LEFT JOIN Cache
dGroupMembers CachedGroupMembers_2  ON ( CachedGroupMembers_2.Disabled =
'0' ) AND ( CachedGroupMembers_2.MemberId = '37' ) AND (
CachedGroupMembers_2.GroupI
d = Groups_1.id )  WHERE ( (  ( main.Queue = '1' OR main.Queue = '1' OR
main.Queue = '3' OR main.Queue = '4' OR main.Queue = '4' OR main.Queue =
'5' OR main.
Queue = '5' OR main.Queue = '6' OR main.Queue = '6' OR main.Queue = '7' OR
main.Queue = '8' OR main.Queue = '9' OR main.Queue = '9' OR main.Queue =
'10' OR m
ain.Queue = '10' OR main.Queue = '11' OR main.Queue = '12' OR main.Queue =
'13' OR main.Queue = '14' OR main.Queue = '15' OR main.Queue = '16' OR
main.Queue
= '17' OR main.Queue = '18' OR main.Queue = '19' OR main.Queue = '20' OR
main.Queue = '21' OR main.Queue = '22' OR main.Queue = '23' OR main.Queue =
'24' OR
main.Queue = '25' OR main.Queue = '26' OR main.Queue = '27' OR main.Queue =
'28' OR main.Queue = '29' OR main.Queue = '30' OR main.Queue = '31' OR
main.Queue
 = '32' OR main.Queue = '33' OR main.Queue = '34' OR main.Queue = '35' OR
main.Queue = '36' OR main.Queue = '37' OR main.Queue = '38' OR main.Queue =
'39' OR
 main.Queue = '40' OR main.Queue = '41' OR main.Queue = '42' OR main.Queue
= '43' OR main.Queue = '44' OR main.Queue = '45' OR main.Queue = '46' OR
main.Queu
e = '47' OR main.Queue = '48' OR main.Queue = '49' OR main.Queue = '50' OR
main.Queue = '51' OR main.Queue = '52' OR main.Queue = '53' OR main.Queue =
'54' O
R main.Queue = '54' OR main.Queue = '56' OR main.Queue = '57' OR main.Queue
= '58' OR main.Queue = '59' OR main.Queue = '60' OR main.Queue = '62' OR
main.Que
ue = '63' OR main.Queue = '64' OR main.Queue = '64' OR main.Queue = '64' OR
main.Queue = '66' OR main.Queue = '68' OR main.Queue = '68' OR main.Queue =
'70'
OR main.Queue = '71' OR main.Queue = '71' OR main.Queue = '72' OR
main.Queue = '73' OR main.Queue = '75' OR main.Queue = '76' OR main.Queue =
'76' OR main.Qu
eue = '77' OR main.Queue = '77' OR main.Queue = '78' OR main.Queue = '78'
OR main.Queue = '79' OR main.Queue = '79' OR main.Queue = '80' OR
main.Queue = '80'
 OR main.Queue = '81' OR main.Queue = '81' OR main.Queue = '82' OR
main.Queue = '83' )  OR  ( CachedGroupMembers_2.MemberId IS NOT NULL AND
Groups_1.Name = '
Requestor' )  OR  ( main.Owner = '37' )  ) ) AND (main.IsMerged IS NULL)
AND (main.Status != 'deleted') AND (main.Type = 'ticket') AND
(main.Priority > '49'
AND  ( CASE WHEN main.Created BETWEEN '1969-12-31 11:59:59' AND '1970-01-01
12:00:01' THEN NULL ELSE main.Created END > '2013-09-23 20:32:04' OR  (
main.Stat
us = 'new' OR main.Status = 'open' OR main.Status = 'stalled' )  ) )  ORDER
BY main.Status ASC, main.Created DESC  LIMIT 10;
# Time: 131023 16:32:05




> > Another interesting point, the mobile site does not seem to have the
> > same problem.
>
> Do you have any local customizations?


We do have one customization. However even if I remove it and clear the
mason cache, the problem persists.

-- 
Tod
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