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Slow Search - mySQL optimized but still the same · **Released**: 10-16-2006

I have a problem with some kind of commands with vBulletin. For example when you run a search the result page shows up after about 10 seconds (in this case the server load is almost at 0) and the creation time is something like "0.30~0.50seconds".

Another slow respond case is if you post a new thread, but not if you add a reply(!) or when you click on a link to the newes post of a thread "showthread.php?goto=newpost&t=5383" for example. This action takes about seconds again. But If you go to the same thread without this option it shows up instantly.

How can you explain this?

Zachery · #2 10-16-2006, 07:36 PM

Are you using similiar threads functions? I'd disable them.

jyajay · #3 10-16-2006, 07:43 PM

No, this has no effect on my forum at all. I tested it with this function turned on and off.

Zachery · #4 10-17-2006, 12:12 AM

Did you disable them showing or disable them 100%? there are 3 settings that control them.

jyajay · #5 10-17-2006, 09:39 AM

Originally I had this function turned off, after turning it on there was no extra slow-down. I assure you this has nothing to do with my problem.

Zachery · #6 10-17-2006, 09:40 AM

I assure you, you should try

jyajay · #7 10-17-2006, 09:46 AM

I did, thats why I told you it really has nothing to do with it.

JoeWho · #8 10-17-2006, 11:03 AM

Quote:

Originally Posted by Zachery

Did you disable them showing or disable them 100%? there are 3 settings that control them.

What are the 3 settings that control them?

Thanks.

jyajay · #9 10-17-2006, 11:10 AM

AdminCP -> Messag Searching Options -> Automatic Similar Thread Search
AdminCP -> Thread Display Options (showthread) -> Show Similar Threads?

I just found two settings that have a direct control over that. Anyway I enabled these after i noticed my problem, still no change at site creation tme.

Ntfu2 · #10 10-17-2006, 03:43 PM

backup your old my.cnf and replace it with this one.

Code:

[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
skip-locking
skip-innodb
query_cache_limit=8M
query_cache_size=256M
query_cache_type=1
max_connections=500
max_user_connections= 300
interactive_timeout=20
wait_timeout=20
connect_timeout=6
thread_cache_size=128
key_buffer=16M
join_buffer=1M
max_allowed_packet=16M
table_cache=1024
record_buffer=1M
sort_buffer_size=2M
read_buffer_size=2M
max_connect_errors=10
# Try number of CPU's*2 for thread_concurrency
thread_concurrency=4
myisam_sort_buffer_size=64M
#log-bin
server-id=1

[mysql.server]
user=mysql
basedir=/var/lib

[safe_mysqld]
err-log=/var/log/mysqld.log
pid-file=/var/lib/mysql/mysql.pid
open_files_limit=8192

[mysqldump]
quick
max_allowed_packet=16M

[mysql]
no-auto-rehash
#safe-updates

[isamchk]
key_buffer=32M
sort_buffer=32M
read_buffer=16M
write_buffer=16M

[myisamchk]
key_buffer=32M
sort_buffer=32M
read_buffer=16M
write_buffer=16M

Then restart MySQL. Also what version of MySQL and PHP are you running.

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