default` enum('on','off') default NULL
> Did you really mean to have 3 values (on, off, NULL)?
>
>
>
> > -Original Message-
> > From: Yu Watanabe [mailto:yu.watan...@jp.fujitsu.com]
> > Sent: Wednesday, May 23, 2012 7:10 PM
> > To: my
('on','off') default NULL
Did you really mean to have 3 values (on, off, NULL)?
> -Original Message-
> From: Yu Watanabe [mailto:yu.watan...@jp.fujitsu.com]
> Sent: Wednesday, May 23, 2012 7:10 PM
> To: mysql@lists.mysql.com
> Subject: Re: Need help for
Johnny
Thank you for the reply.
>Second, make sure your Innodb buffer pool is allocating as much ram as
>possible. I'd even go as far as adding another 8gb of ram to the
>server. The buffer pool setting is going to give you the best
>performance increase.
The problem is mainly on MyISAM engine
Alex
Thank you for the advice.
Probably, we will put index (key) on both columns.
Thanks,
Yu
Alex Schaft さんは書きました:
>On 2012/05/24 07:37, Alex Schaft wrote:
>> You are selecting a record based on the value of data_id and
>> thold_enabled, but don't have an index on either? Add an index for both.
On 2012/05/24 07:37, Alex Schaft wrote:
> You are selecting a record based on the value of data_id and
> thold_enabled, but don't have an index on either? Add an index for both.
> If data_id is unique, then you would only need an index on that.
>
> Alex
>
On second thought, an index on thold_enabl
On 2012/05/24 04:10, Yu Watanabe wrote:
> 2. Instead INDEXes and schema design must be studied. Please provide:
> SHOW CREATE TABLE
> | thold_data | CREATE TABLE `thold_data` (
> `id` int(11) NOT NULL auto_increment,
> `rra_id` int(11) NOT NULL default '0',
> `data_id` int(11) NOT NU
query. Tuning will not help. Period.
>
>1. There are only a few things worth tuning -- see
>http://mysql.rjweb.org/doc.php/memory (they don't include the ones you tried)
>
>2. Instead INDEXes and schema design must be studied. Please provide:
>SHOW CREATE TABLE
&
BLE SIZE
EXPLAIN SELECT ...
> -Original Message-
> From: Yu Watanabe [mailto:yu.watan...@jp.fujitsu.com]
> Sent: Tuesday, May 22, 2012 7:07 PM
> To: mysql@lists.mysql.com
> Subject: Need help for performance tuning with Mysql
>
> Hello all.
>
> I would like
Hi,
How much ever tuning you do at my.cnf will not help much, if you do not
tune your sql's.
Your first priority should be tune sql's, which will give you good
performance even with decent memory allocations and other settings
regards
anandkl
On Wed, May 23, 2012 at 3:45 PM, Andrew Moore wrote:
Yu,
The upgrade to 5.5 that Jonny advises should NOT your first action. If
MySQL is mis-configured on 5.0 it will likely be misconfigured on 5.1 and
5.5. Test your application thoroughly on the new version before heeding
that advice. Read the change logs and known bugs. Running the upgrade might
s
Hello, Yu-san,
(へろへろな英語で申し訳ないです)
Can I think that you already tweaked Index on the tables?
if you yet,please create apt indexes.
MyISAM caches only Index without data.
i take way for decreasing disk seek,
1) create more indexes on the tables,if the tables doesn't update quite often.
including
Hello Tsubasa.
Thank you for the reply. (返信ありがとうございます。)
Our high loaded DB are both INNODB and MyISAM.
Espicially , on MyISAM.
I will consider the tuning of innodb_buffer_pool_size as well.
Do you know the tips for how to tune the disk access for MyISAM?
Thanks,
Yu
Tsubasa Tanaka さんは書きました:
>
I don't see any attachments.
First, I would upgrade to 5.5 as 5.0 is very old. The upgrade process
is painless.
Second, make sure your Innodb buffer pool is allocating as much ram as
possible. I'd even go as far as adding another 8gb of ram to the
server. The buffer pool setting is going to give
Hello,
I seem your mysqld doesn't use enough memory.
>>Date Time CPU% RSS VSZ
>>2012/5/22 21:00:39 109 294752 540028
if your mysqld uses InnoDB oftenly,
edit innodb_buffer_pool_size in you my.cnf.
http://dev.mysql.com/doc/refman/5.1/en/innodb-parameters.html#sysvar_innodb_b
Also following is the free command result.
total used free sharedbuffers cached
Mem: 81623807843676 318704 0 956325970892
-/+ buffers/cache:17771526385228
Swap: 8032492 235608008932
Thanks,
Yu
Yu Watanabe
Hello all.
I would like to ask for advice with performance tuning with MySQL.
Following are some data for my server.
CPU: Xeon(TM) 2.8GHz (2CPUs - 8core total)
Memory : 8GB
OS : RHEL 4.4 x86_64
MySQL : MySQL 5.0.50sp1-enterprise
Attached file
# my.cnf.txt : my.cnf info
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