javaranch/jforum – nailing down a threading problem

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Archive for January, 2009

javaranch/jforum – nailing down a threading problem

January 19th, 2009 by Jeanne Boyarsky

Similar to the thought process for debugging a performance problem, here’s one for debugging a threading issue: In Production, we have a problem where the threads in a forum listing disappear showing only one or two threads in their place.  We found a workaround pretty quickly (clear the cache), but want to stop the problem […]

production is slow – tuning jforum for javaranch – part 2

January 11th, 2009 by Jeanne Boyarsky

A moderator reported that moving topics took a long time in production and our sandbox.  I just tried it and got 70 seconds through the GUI!  It didn’t used to take this long.  I’m comparing our development sandbox a few months ago to our development sandbox today.  Clearly something has changed.  The question is what! […]

Making MySQL Use More Memory

January 7th, 2009 by Scott Selikoff

Unlike a lot of database servers, MySQL is strangely conservative (by default) on how much memory it will allocate. If you’re not careful, you can have 16GB of RAM on your machine with MySQL only using 50MBs, leading to extremely poor performance under heavy load. I know firsthand that navigating MySQL configuration guides can be […]