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From:Heikki Tuuri Date:December 8 2005 11:33pm
Subject:Re: Optimize: 14 hours and still running!
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you can use SHOW INNODB STATUS\G to monitor how many rows per second it is 
inserting to the new, reorganized table.

If the workload is disk-bound, it may be as low as 100 rows per second. Then 
inserting 20 million rows will take 2 days.

Best regards,


Oracle Corp./Innobase Oy
InnoDB - transactions, row level locking, and foreign keys for MySQL

InnoDB Hot Backup - a hot backup tool for InnoDB which also backs up MyISAM 

----- Original Message ----- 
From: "Nathan Gross" <nat101sql@stripped>
Newsgroups: mailing.database.myodbc
Sent: Thursday, December 08, 2005 8:58 PM
Subject: Optimize: 14 hours and still running!

> On a 1.6ghz, 1gb ram, Linux machine running Mysql 4.1x.
>  I have an Innodb table with over 20 million records and index size
> about 3.7 gig, data size 2.2gig (yes, many indexes, more space then
> the data itself). Last night I tried an Optimize from the Admin gui
> console (logged in as root at the host server), and the thing is still
> running!
> Problem is I need to leave early this evening and have to take some 
> action.
> The Linux 'top' utility has it on the top since then at about 11%-18%
> cpu Disk activity is continuously heavy.
> 1. How long should it take?
> 2. If I hit <cancel> will it:
> a) Roll back what it did, another 14 hours!
> b) Just stop as if nothing happened.
> c) The table will be partially optimized and will run normally.
> d) hang the process and/or machine.
> 3. Is the data in jeopardy?
> Thank you all.
> -nat
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Optimize: 14 hours and still running!Nathan Gross8 Dec
  • Re: Optimize: 14 hours and still running!Robert L Cochran8 Dec
  • Re: Optimize: 14 hours and still running!Gleb Paharenko9 Dec
    • Re: Optimize: 14 hours and still running!Eric Bergen9 Dec
RE: Optimize: 14 hours and still running!Jeff McKeon8 Dec
Re: Optimize: 14 hours and still running!Heikki Tuuri9 Dec