1
SMPnet
Acct. Suspended: Too many resources
  • 2010/4/29 16:41

  • SMPnet

  • Just popping in

  • Posts: 5

  • Since: 2010/4/29


Hey everyone, I've got a bit of a problem I'm trying to figure out. I've got quite an active Xoops site which was pulled offline, "because my database was using too many resources on the server."

I was emailed the "details" which were as follows:

Quote:

It has come to our attention that your hosting account, specifically the database is causing the resources to be over-utilized.

We have disabled your database to return the server to normal usage. To re-enable your database, you will need to correct the following query:

SELECT t.*, p.post_time as last_post_time, p.poster_name as
last_poster_name, p.icon, p.post_id, p.uid FROM xoops_bb_topics t LEFT
JOIN xoops_bb_posts p ON p.post_id = t.topic_last_post_id LEFT JOIN
xoops_bb_reads_topic r ON r.read_item = t.topic_id WHERE p.post_time
> 0 AND (r.read_id IS NULL OR r.post_id < t.topic_last_post_id)
AND t.forum_id IN
(1,12,11,21,26,13,2,6,16,15,20,7,25,17,18,35,9,34,5,36,14,8,24,22,10,27)
AND t.approved = 1 AND p.approved = 1 ORDER BY p.post_time DESC LIMIT
0, 35

EXPLAIN:
id| select_type| table| type|
possible_keys| key| key_len| ref| rows|
Extra
1| SIMPLE| t| range|
forum_id,topic_last_post_id,approved| forum_id| 4| |
14007| Using where; Using temporary; Using filesort
1|
SIMPLE| p| eq_ref| PRIMARY,approved,post_time|
PRIMARY| 4| smxoops2.t.topic_last_post_id| 1|
Using where
1| SIMPLE| r| ALL| | |
| | 9038| Using where

This query examines
126595266 rows, which is unacceptable on this server.


This is a 2.4.4 install and within the past month I upgraded CBB 3.07 -> 3.08 as well as upgraded to 2.4.4 itself.

XOOPS Version - XOOPS 2.4.4
PHP Version - 4.3.11
MySQL Version - 4.1.22-max-log
Server API Version - cgi-fcgi
OS Version - Linux

safe_mode - Off
register_globals - Off
magic_quotes_gpc - On
allow_url_fopen - Off
fsockopen - On
allow_call_time_pass_reference - On
post_max_size - 8M
max_input_time - 60
output_buffering - 0
max_execution_time - 30
memory_limit -
file_uploads - On
upload_max_filesize - 2M

If anyone could lend a hand I'd really appreciate it. The Db should be re-enabled and I should be able to go in very shortly.

Anything more I can provide, please let me know. Thanks!!


2
kaotik
Re: Acct. Suspended: Too many resources
  • 2010/4/29 21:58

  • kaotik

  • Just can't stay away

  • Posts: 861

  • Since: 2004/2/19


Do you have a block on your main page that displays the latest forum topics?

If so you should consider caching that block. Even a 5 minute cache will do wonders in terms of database load.

3
ghia
Re: Acct. Suspended: Too many resources
  • 2010/4/29 22:50

  • ghia

  • Community Support Member

  • Posts: 4953

  • Since: 2008/7/3 1


Try by modificating the query from
ORDER BY p.post_time DESC
to
ORDER BY t.topic_last_post_id DESC

4
SMPnet
Re: Acct. Suspended: Too many resources
  • 2010/4/29 23:38

  • SMPnet

  • Just popping in

  • Posts: 5

  • Since: 2010/4/29


On the front page, the very first displayed is "Recently Replied Topics". The fact that it updates immediately and shows which threads have latest posts makes it a favorite. I have been running it this way since 2004, do you believe that is the problem? The site has many, many, MANY threads and posts. It sees about 10K/mo in traffic so it is displayed quite often.

4-10-10 was the update to CBB 3.08 from 3.07 if that makes any difference. Switched to CK editor at that time also.

I'm also not sure "which" file is the offender. I have access to me Db again, but have the site "off" until I can figure this out. Too many times and the host is going to get angry.

Thanks for reading

5
ghia
Re: Acct. Suspended: Too many resources
  • 2010/4/30 6:08

  • ghia

  • Community Support Member

  • Posts: 4953

  • Since: 2008/7/3 1


You can put debug on, which will give a list of the queires and their timing.
You can try them and alternatives in phpMyAdmin (remember to add the table prefix).

Yes, I saw the number: 120 million. Is that a correct record count? (I can imaging that newbb (and maybe MySQL either) were designed to operate on this scale.) Are these still all relevant?
Anyway, I can see the hosters' problems/fears.

6
SMPnet
Re: Acct. Suspended: Too many resources
  • 2010/5/1 16:02

  • SMPnet

  • Just popping in

  • Posts: 5

  • Since: 2010/4/29


Just to let everyone know, I never really figured it out. The queries (even the one they mention) take .4xxx seconds to execute which looks on par with the other queries. I personally never noticed any slow down or long load times.

I don't think 120 million is a correct figure. We've got a DB which is about 1GB in size (thanks to forum posts) but there's only a few hundred-thousand posts. Not millions.

The site originally ran Xoops 2.0.6 and has been kept up with upgrades until the current 2.4.4. I suppose maybe all the updates over the years caused some issue.

I ended up just doing a fresh 2.4.4 install with latest modules and just copied over the tables needed to salvage user accounts/posts/PMs, etc and started from scratch with everything else. I went from MySQL 4.1 to 5 so the DB structure had to be tweaked slightly but everything is working well and the host confirms everything is alright with them now.

I am a long-time Xoops user and really enjoy the software. I like much better the direction Xoops is going now. Keep up the great work!

Thanks for all the comments!

7
ghia
Re: Acct. Suspended: Too many resources
  • 2010/5/2 0:43

  • ghia

  • Community Support Member

  • Posts: 4953

  • Since: 2008/7/3 1


Quote:
I went from MySQL 4.1 to 5
Probably, this was the real step forward in the improvement (and perhaps together with the reload of the tables).

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