Comments on: What to tune in MySQL Server after installation

By: Jitendra

Jitendra — Sat, 06 Sep 2008 05:36:17 +0000

Hi, Peter,

I am new to mysql setting level.

Right now I am working in a PHP-Mysql base project in which we have one job table and one url master table.
Job table contains 15000000 records and url table contains 25000 record. Every day we are crawling all the urls and if there is any new job on those url then we will insert that record in our job table. Show each and every day there are near 100000 new job record inserted into job table.

Right now out both table type is ‘innodb’.

But problem is right now our query takes two much time for duplicate checking and other type processes.

Can you please tell me what are the settings required in mysql for incressing performance of my project.

Also can you please tell me that the type of table ‘innodb’ is OK ro not..

Below are the my server ‘SHOW STATUS’ output;

Key_read_requests 9490927
Key_reads 72073
Key_write_requests 678314
Key_writes 430602
Open_tables 561
Open_files 278

Thanks !

By: Sam Nicolosi

Sam Nicolosi — Sun, 27 Jul 2008 21:17:14 +0000

I am a registered user on a couple of “blogs” (websites) that allow articles to be discussed (by registered users). And the users are given a opportunity to “edit” his/her own post during a 30 minute period following submission of same.
One of the sites where I am encountering a problem is: commondreams.org

Each time I try to EDIT one of my posts, I am allowed (once) to perform the edit, but I then immediately receive this message:

“WordPress database error: [You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1]

SELECT comment_content, comment_author_IP, comment_date_gmt FROM wp_comments
WHERE comment_ID =

You aren’t allowed to edit this comment, either because you didn’t write it
or you passed the 30 minute time limit.”

I am using a PC running Windows XP, and using either Firefox or Internet Explorer
(the problem occurs with either browser).

What is “my SQL syntax”?
Where does it “reside”?
How can I “fix it”?
Is there some nifty “patch” that will fix it for me?
I am not a “tech-type”, so please try not to answer me in “Computereese”

Thanks!

By: peter

peter — Tue, 08 Jul 2008 02:41:50 +0000

Thanks. Fixed

By: Roel

Roel — Tue, 08 Jul 2008 01:09:46 +0000

innodb_flush_logs_at_trx_commit should be innodb_flush_log_at_trx_commit (no s)

By: Dane Jensen

Dane Jensen — Fri, 20 Jun 2008 23:00:17 +0000

Great guide! One question, is there any sort of performance gain/penalty from using innodb_file_per_table?

And one small correction, it should be ‘innodb_flush_log_at_trx_commit’ (singular log), rather than ‘innodb_flush_logs_at_trx_commit’ it seems.

By: Project 2061 Techlog » Optimizing MySQL Server Runtime Parameters

Project 2061 Techlog » Optimizing MySQL Server Runtime Parameters — Wed, 07 May 2008 18:55:03 +0000

[...] MySQL Performance Blog: What to tune in MySQL Server after installation [...]

By: ramkiran

ramkiran — Wed, 02 Apr 2008 11:40:22 +0000

how to determine the installed instance name?

can any bosy help me in the form of a query

By: ztej

ztej — Tue, 22 Jan 2008 19:10:05 +0000

Hi Peter, this article actual a 2008 year, thanks

By: Michael

Michael — Mon, 14 Jan 2008 14:49:24 +0000

Anil, major optimum setting: move off of windows anything, to anything else..anything is an improvement. All the rest of us already know this. Why don’t you?

By: ahmed

ahmed — Wed, 09 Jan 2008 05:41:59 +0000

If I have an insert/update and a delete statement in a mysql stored procedure,does it mean that the second statement(delete) is executed only after the inserts/updates are completed ? Or do they all run concurrently.If yes,how to make them run one after another?