Perrin, I never received your mail (actually, I hardly receive any mails form this list) I have to go to the archives to see if I've received any replies or to see what's been posted in general!!
So, in answer to your questions ........ P. May I ask why you're using a threaded MPM? Unless you're running on Windows, you should probably avoid it. The threaded MPM uses a lot more memory than the prefork one. A. This version of MP has just been installed and we have a dept. that deals with this sort of thing. It's not until we had a problem, that I started to look into versions of s/w etc. It's a big company and the admin dept. decide what to install. (I've since asked for the prefork mpm to be installed) P. (regarding using Thread::Sociable and threads::shared) They won't work because DBD modules carry around XS structures which don't know anything about perl threads. That's the problem DBI::Pool was trying to address. A. After I started looking into this issue, I quickly realised that these wouldn't help me. P. Can you explain a little more about what the problem is and why you think it involves Apache::DBI? A. We recently went live with a DB application and the system ground to a halt. It could be due to many things, but the thing I'm looking at is the fact that we had many network connections. I then found the info about Databases and threaded MPM. From what I understand, DB connections created at server startup are not shared amongst threads. As I see now, threaded MPM doesn't sit well with DB and really, we shouldn't be using it at all. I've made this clear to my admin dept. and we're going to install and test prefork MPM. Thanks for getting back to me, anyway. -Ants Jonathan Vanasco <[EMAIL PROTECTED]> wrote: On Jul 9, 2007, at 9:12 AM, Anthony Gardner wrote: > http://perl.apache.org/docs/2.0/user/performance/ > mpm.html#Work_with_DataBases_under_Threaded_MPM > > I'm looking into a problem we're experiencing (lots of netword > connections) and I think the answer lies with Apache::DBI and the > version of mod_perl we're using. > > A few questions, does anyone know of the state of DBI::Pool? > > If anyone is using threaded MPM and Apache::DBI, how are they > dealing with sharing the the connection within the threads? > > I'm looking at Thread::Sociable (preference) and threads::shared and > > I'm looking for tips and/or defacto stds used at the time of writing. > Any tips would be great while I continue playing with threads and > searching for other info. Some people here ( not including me though ) are using connect_cached in DBI , and bypassing Apache::DBI altogether. you might want to try that. correct me if i'm wrong.. but i believe you want to not share dbi connections between threads. wouldn't you need a factory class to toss you a fresh connect ? if you want to do true connection pooling, you'd be best off with something like sqlrelay or pgpool. the apache::dbi/dbi cached don't really pool; they just override connects for established connections on their process and reuse them. things like sqlrelay/pgpool will let you use 50 db connections for 150 server processes ( by blocking a lot, yes ) // Jonathan Vanasco | - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | CEO/Founder SyndiClick Networks | - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | Founder/CTO/CVO | FindMeOn.com - The cure for Multiple Web Personality Disorder | Web Identity Management and 3D Social Networking | - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | RoadSound.com - Tools For Bands, Stuff For Fans | Collaborative Online Management And Syndication Tools | - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - --------------------------------- Yahoo! Mail is the world's favourite email. Don't settle for less, sign up for your freeaccount today.