My production machine is a dual-processor machine running Windows 2000 Server with zope running as a service. I understand from previous posts that setting processor affinity, i.e., making python/zope run on only one of the processors, may be a good thing. Since this is my production machine, I would rather not experiment too much. What I have is the imagecfg.exe program from http://www.robpol86.com/tutorials/imagecfg.php, and the instructions are to run imagecfg -u file.exe imagecfg -a 0x1 file.exe on the executable file I would wish to set affinity to processor 1 on. I see that in Task Manager, I cannot set processor affinity manually on my python process. I get "access denied." I am running what I presume is the stock win32 install of zope-2.6.2. It began as 2.6.0, but has been upgraded. So, now for the question: Has anyone done this? Is the above procedure the correct way to do this? Like I say, it's a production machine, and I would rather not experiment. Which executable(s) should be imagecfg'd? Is it the python.exe in [zope]/bin? Or the .exe that starts the service? or a .dll or two? -- Jim Washington