Hehe thanks Charles. I think you might have a point anyway. Running that script recommended by Jason has thrown up a few things that need tweaking with mysql.
Not sure what some of them mean yet, and not sure if it'll help, but we'll see. I appreciate you helping believe me! Justin ------------------------------------------------- Justin Hayes OpenBet Support Manager justin.ha...@openbet.com On 29 Jun 2010, at 15:28, Charles Johnson wrote: > Justin, thank you for the kindness of your reply. I didn't intend to send you > chasing rabbits, so to speak. Just offering something to add to the checklist > of items to be crossed off before digging too deeply into the perl code. If > you are convinced that mysql is performing at its best then please ignore my > noise! :) > > Cheers-- > > Charles > On Jun 29, 2010, at 9:18 AM, Justin Hayes wrote: > >> Hi Charles, >> >> But as far as we can tell from our profiling the time is spent in the perl >> rendering the ticket, not in the query used to retrieve the ticket and >> attachments in the first place (which happens once at the start I believe). >> The loop that renders the ticket history and each attachment takes anything >> up to 20+ seconds. >> >> So I'm not sure how the DB can be an issue here? Unless I'm wrong about it >> doing 1 big query at the start and there are loads of little queries inside >> the loop. >> >> Cheers, >> >> Justin >> >> ------------------------------------------------- >> Justin Hayes >> OpenBet Support Manager >> justin.ha...@openbet.com >> >> On 29 Jun 2010, at 15:14, Charles Johnson wrote: >> >>> Quite outside of the speed of RT, what database are you using as a >>> back-end? How long has it been since you did some care and feeding of your >>> database? How big are your tables? If you are using mysql or postgres have >>> you used their tools to examine your database, especially the indexes and >>> statistics? This may be an issue with indexes needing to be rebuilt, or >>> asking the database to gather new statistics for the queries your are >>> running. >>> >>> Cheers-- >>> >>> Charles >>> >>> On Jun 29, 2010, at 8:09 AM, Justin Hayes wrote: >>> >>>> Hi everyone, >>>> >>>> I've raised this before, but we've had another look at it and still can't >>>> see how to improve things. >>>> >>>> We put a lot of comments/replies in our tickets. Often there can be 50-100 >>>> entries in a ticket, mostly plain text. Loading such a ticket can take >>>> 10-20secs. >>>> >>>> We don't have any slow queries - all the time seems to be in the code >>>> rendering the history of the ticket. >>>> We've had a go at stripping functions out of ShowHistory, ShowTransaction >>>> and ShowTransactionAttachmments but not had much success. >>>> >>>> FWIW our RT runs on quad 3ghz Xeons with 8gb of ram. >>>> >>>> I'd like to try and determine if we're just slow, or if this is just how >>>> long RT takes. Maybe perl is just slow. >>>> >>>> Can anyone shed any light on how long it takes them to render long tickets >>>> in their systems? If you look at the page source it gives you a value e.g. >>>> >>>> <span>Time to display: 24.996907</span> >>>> >>>> Can anyone share some numbers from theirs for longer tickets? It would be >>>> really appreciated. >>>> >>>> >>>> Thanks, >>>> >>>> Justin >>>> >>>> ------------------------------------------------- >>>> Justin Hayes >>>> OpenBet Support Manager >>>> justin.ha...@openbet.com >>>> >>>> >>>> Discover RT's hidden secrets with RT Essentials from O'Reilly Media. >>>> Buy a copy at http://rtbook.bestpractical.com >>> >>> -- >>> Charles Johnson, Vanderbilt University >>> Advanced Computing Center for Research & Education >>> Mailing Address: Peabody #34, 230 Appleton Place, Nashville, TN 37203 >>> Shipping Address: 1231 18th Avenue South, Hill Center, Suite 143, >>> Nashville, TN 37212 >>> Office: 615-343-4134 >>> Cell: 615-478-5743 >>> Fax: 615-343-7216 >>> charles.john...@accre.vanderbilt.edu >>> >> > > -- > Charles Johnson, Vanderbilt University > Advanced Computing Center for Research & Education > Mailing Address: Peabody #34, 230 Appleton Place, Nashville, TN 37203 > Shipping Address: 1231 18th Avenue South, Hill Center, Suite 143, Nashville, > TN 37212 > Office: 615-343-4134 > Cell: 615-478-5743 > Fax: 615-343-7216 Discover RT's hidden secrets with RT Essentials from O'Reilly Media. Buy a copy at http://rtbook.bestpractical.com
