[rt-users] UPDATE sessions query

Dan Stilts dstilts at gaiaonline.com
Sun Jan 13 01:35:35 EST 2008

Figured I would try this one more time...anyone have any ideas on this?


Dan Stilts wrote:
> Hi All,
> We are running into a problem with one of our Queues which has around 
> ~12,000 new and open tickets in it. When clicking on the Queue from the 
> 'Queues I administer' it finds 12,122 tickets (at the moment), which is 
> fine and that page comes up nice and speedy (as speedy as expected with 
> that many tickets found anyway). The problem comes up when clicking on 
> any of the tickets on that resulting page though. Average time to 
> display the page is around 15-20 seconds.
> I enabled mysql logging so I could see what is going on when I click on 
> one of those tickets and it ends up resulting in about a 1MB  "UPDATE 
> sessions SET a_session =" query being performed. Then each time you go 
> "Back" to the results page and click on another ticket, it has to update 
> that session again.
> I understand the reason this is so large is because it's storing the 
> information about those ~12k tickets so you can do your First, Last, 
> Previous and Next's when you go into that ticket.
> Does anyone have any suggestions for something I can do speed this up? 
> Or is there an easy way to place a hard limit of the number of results 
> stored in the session?
> I would think file based sessions would speed this up, but unfortunately 
> that won't work for us as we are running two RT servers in a round robin 
> setup, so the session would invalid depending on which server they ended 
> up on during each new page.
> System info:
> RT 3.6.4 (also tried 3.6.6RC2, but no improvement)
> MySQL 5.0.22
> Apache 2.2.3
> DBIx::SearchBuilder 1.50
> Thanks!
> -Dan
> _______________________________________________
> http://lists.bestpractical.com/cgi-bin/mailman/listinfo/rt-users
> If you sign up for a new RT support contract before December 31, we'll take
> up to 20 percent off the price. This sale won't last long, so get in 
> touch today.    Email us at sales at bestpractical.com or call us at +1 617 
> 812 0745.
> Community help: http://wiki.bestpractical.com
> Commercial support: sales at bestpractical.com
> Discover RT's hidden secrets with RT Essentials from O'Reilly Media. Buy 
> a copy at http://rtbook.bestpractical.com

More information about the rt-users mailing list