Brent Baisley wrote:
calculations from your query, like replace datesub(now(), interval 12
month) with a constant. Which means figuring out the right date before
hand.
AFAIK, no column is involved in this particular function, so there's no
point doing the computation beforehand, it's done by
El Mar 01 Mar 2005 18:29, Heikki Tuuri escribi:
Alfredo,
I have changed my my.cnf to try and include the suggestions from the list, as
much as possible and try to run my program again. It now reads like this:
innodb_data_file_path = ibdata1:2G;ibdata2:2G:autoextend
set-variable =
Coming in late on this thread. The testing on your laptop, are you just
running the one query or are you somehow emulating the typical load you
are trying to design for? As you said, you are trying to improve
concurrency, so you'll need to compare MyISAM and InnoDB setups under
load (i.e. the
El Mié 02 Mar 2005 11:41, Brent Baisley escribió:
Coming in late on this thread. The testing on your laptop, are you just
running the one query or are you somehow emulating the typical load you
are trying to design for? As you said, you are trying to improve
concurrency, so you'll need to
H, sounds like you are trying to mix OLTP and OLAP in one database
structure. That's a tough one. You want your tables designed to always
accept data in real time, but once the data is in, it doesn't change
and you want to query it. Relational vs. Dimensional data models.
Your hardware is
El Mié 02 Mar 2005 16:04, escribió:
H, sounds like you are trying to mix OLTP and OLAP in one database
structure. That's a tough one. You want your tables designed to always
accept data in real time, but once the data is in, it doesn't change
and you want to query it. Relational vs.
Hi:
I have switched from MyISAM tables to InnoDB, using MySQL 4.1.10 under SuSE
8.2.
My application, an ERP system developed in-house, uses 70 tables, the largest
one holding a little over one million rows. To assist when changing table
structures, we developed a software that creates a new
What have you actually done to 'tune' the server? How are you doing
the inserts?
InnoDB uses transactions. If you are doing each row as a single
transaction (the default), it would probably take a lot longer.
I assume you're doing your copying as a INSERT INTO $new_table SELECT
* FROM
Gary's got another point about the transactions.
I'd still look to using mysqldump first if possible, if they have the
ability it will be remarkably faster.
Otherwise, turning transactions off before the insert, and locking the
table as well, (if you haven't already done that) could prove to
El Mar 01 Mar 2005 17:32, Gary Richardson escribió:
What have you actually done to 'tune' the server? How are you doing
the inserts?
InnoDB uses transactions. If you are doing each row as a single
transaction (the default), it would probably take a lot longer.
I assume you're doing your
InnoDB is a very different platform from MyISAM.
innodb_data_file_path = ibdata1:10M:autoextend
How big is your data? You need to set your innodb_data_file_path to
have enough space for this. Right now, your file is autoextending
constantly. I would either turn on per table table space, or
Alfredo,
- Original Message -
From: Alfredo Cole [EMAIL PROTECTED]
Newsgroups: mailing.database.myodbc
Sent: Wednesday, March 02, 2005 2:09 AM
Subject: Re: Switching to InnoDB turns out dissapointing
El Mar 01 Mar 2005 17:32, Gary Richardson escribi=F3:
What have you actually done
On Tue, 1 Mar 2005 18:09:37 -0600, Alfredo Cole wrote:
El Mar 01 Mar 2005 17:32, Gary Richardson escribió:
InnoDB uses transactions. If you are doing each row as a single
transaction (the default), it would probably take a lot longer.
I assume you're doing your copying as a INSERT INTO
set-variable =innodb_log_buffer_size=32M
The log buffer is too big.
Is there a performance penalty associated with making the log buffer
size too large, or is just not beneficial?
-JF
--
MySQL General Mailing List
For list archives: http://lists.mysql.com/mysql
To unsubscribe:
Jon,
- Original Message -
From: Jon Frisby [EMAIL PROTECTED]
Newsgroups: mailing.database.myodbc
Sent: Wednesday, March 02, 2005 3:32 AM
Subject: RE: Switching to InnoDB turns out dissapointing
set-variable =3Dinnodb_log_buffer_size=3D32M
=20
The log buffer is too big
15 matches
Mail list logo
