Scott Lamb wrote: > $ make clean > $ time make -j1 > $ make clean > $ time make -j8 So, as you guessed, j1 took just under 10 minutes whereas j8 took under 2. Which is what I would expect. Okay, thanks for the help. It's time I go beat up our vendor now. As far as understand their explanation is that they simply call the thumbnail creation routine sequentially, one image at a time, which in turn goes to PHP which then goes to Apache. And as far as the OS is concerned, it received 1 single call from Apache to do something, as opposed to multiple calls at the same time. Would that be a reasonable explanation (of why their process takes so long)? Because they're not spawning multiple calls ... ? -- W | It's not a bug - it's an undocumented feature. +-------------------------------------------------------------------- Ashley M. Kirchner <mailto:ashley at pcraft.com> . 303.442.6410 x130 IT Director / SysAdmin / Websmith . 800.441.3873 x130 Photo Craft Imaging . 3550 Arapahoe Ave. #6 http://www.pcraft.com ..... . . . Boulder, CO 80303, U.S.A.