Bug #70706 MySQL Workbench uses 75% CPU, becomes unusable

• Submitted: 23 Oct 2013 16:05
• Modified: 5 Nov 2013 15:37
• Reporter: Keith McRae
• Status: Not a Bug
• Category: MySQL Workbench: Modeling
• Severity: S2 (Serious)
• Version: 6.0.7 revision 11215
• OS: Linux (openSUSE 12.3 (x86_64) KDE)
• CPU Architecture: Any

[23 Oct 2013 16:05] Keith McRae

Description:
Using the Modelling features of MySQL Workbench causes it hog the CPU and freeze.

How to repeat:
Start MySQL Workbench, click to create new model, double click to add new diagram, click to place new table, edit new table by creating a column. Workbench is now hogging the CPU (check with top) along with Xorg. On my PC mysql-workbench was at the top of tops list with around 72% CPU use and Xorg had around 34% CPU use. At this point Workbench would not repaint the window for at least a minute and is completely unusable.

[1 Nov 2013 13:22] Keith McRae

mysql-workbench --verbose output file.

Attachment: workbenchout.log.bz2 (application/x-bzip, text), 714 bytes.

[1 Nov 2013 13:24] Keith McRae

More information.

The high CPU load only occurs when you are editing a table in the modeller. Once you close the editing tab, CPU usage returns to normal. I uploaded a log file that has the output from mysql-workbench --verbose.

Thanks
Keith

[5 Nov 2013 15:37] Keith McRae

This isn't a MySQL Workbench bug, but something to do with Intel Graphics and/or XOrg. It works fine on a Radeon based graphics card with the AMD driver. Intel have released updated drivers, I'll retest once these have been merged into OpenSUSE.

Setting 'Not a Bug'.