You Wrote:
I've been getting errors like the following on an occasional basis for the last week or so. Might it be that we're not yet out of the woods on the server load issue? *Warning*: open(/tmp/sess_d951b98b197c77c47e75c3217ffce7cd, O_RDWR) failed: Too many open files in system (23) in */usr/local/apache/htdocs/w/wiki.phtml* on line *7* *Warning*: Failed opening 'Setup.php' for inclusion (include_path='.:/usr/local/lib/php') in */usr/local/apache/htdocs/w/wiki.phtml* on line *12*
I suspect this is caused not by too much load overall, but by people accessing several of the foreign wikis at once. The APC cache software warns about the problem, since it keeps an open file for each PHP source file, and each wiki uses 20-30 files. I'll kick up that number and restart the server.