Advice RE Apache ITK
Initial checking shows that ITK (non-threaded) can be as efficient as a threaded Apache provided there is enough RAM.
‘If you have the RAM available and start enough spare workers processes then the advantages of mpm_worker are limited’
With enough RAM and good configuration the performance of ITK should be OK
ITK is much safer in that it can handle any type of PHP extension.
Although ITK needs to start out as a root process this is only really an issue if using HTTPS.
Another useful point is at:
23. Don’t use threaded mpm with mod_php – look at using mod_itk, mod_php tends to segfault with threaded mpm.
Apache ITK could be run behind a proxy to possibly increase security.
Settings to tune
A useful looking resource is at:
This might be a starting list of settings to tune: