Re: InnoDB slow?

2003-09-02 Thread Chris Nolan
Could you send us your my.cnf / my.ini ? We might be able to help you tune your InnoDB config for this setup. In my experience, InnoDB performance should approach MyISAM in most environments where the disk is the bottleneck (due to the fact, as said in the InnoDB table type intro in the docs,

Re: InnoDB slow?

2003-09-02 Thread Mikhail Entaltsev
Paul, if your MySQL server is runnign under Linux then try to play with innodb_flush_method variable. I've changed it to O_DSYNC and InnoDB became ~ 9 times faster (Suse 8.2 Linux 2.4.20-4GB i386). Also check that you didn't allocate too much memory (OS shouldn't swap). Best regards, Mikhail.

Re: InnoDB slow?

2003-09-02 Thread Paul Gallier
Thanks for the info. I'm running MySQL 4.0.14 under Redhat 8.0 / Linux 2.4.20. Here are the timings I ended up with from playing with innodb_flush_method: innodb_flush_method=fdatasync (default) 10 minutes 37 seconds innodb_flush_method=littlesync 10 minutes 22 seconds

Re: InnoDB slow?

2003-09-02 Thread Mikhail Entaltsev
fdatasync() or O_DSYNC because there have been problems with them on many Unix flavors. ** Mikhail. - Original Message - From: Paul Gallier To: Mikhail Entaltsev ; [EMAIL PROTECTED] Sent: Tuesday, September 02, 2003 4:24 AM Subject: Re: InnoDB slow? Thanks

Re: InnoDB slow?

2003-09-02 Thread Paul Gallier
been problems with them on many Unix flavors. ** Mikhail. - Original Message - From: Paul Gallier To: Mikhail Entaltsev ; [EMAIL PROTECTED] Sent: Tuesday, September 02, 2003 4:24 AM Subject: Re: InnoDB slow? Thanks for the info. I'm running MySQL 4.0.14 under Redhat 8.0

Re: InnoDB slow?

2003-09-02 Thread Heikki Tuuri
Hi! - Original Message - From: Paul Gallier [EMAIL PROTECTED] Newsgroups: mailing.database.myodbc Sent: Tuesday, September 02, 2003 9:55 PM Subject: Re: InnoDB slow? --060404050304080006000506 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer

Re: InnoDB slow?

2003-09-02 Thread Paul Gallier
PROTECTED] Newsgroups: mailing.database.myodbc Sent: Tuesday, September 02, 2003 9:55 PM Subject: Re: InnoDB slow? --060404050304080006000506 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit I've not a clue - digging around somewhere