Unify php-fpm pools and use only single pool for all hosted websites
My setup is as follows: I have a master server, that contains ISPConfig itself, then there is a another server for the database and one for the website installations.
Currently there are around 15 websites hosted on the system like this. Due to the fact that a new php-fpm pool is created for every new website, the creation of the website has an overall effect on the available resources. From this it follows that with a corresponding load, the response times of the hosted websites become slower and slower, since the pools "fight each other" for resources.
In addition, since I try to allocate as many resources as possible to each website, I have to change the poolconfig for all websites every time a new website is added, as the total memory then has to be distributed over even more pools.
In addition to this setup, I run another server on which all configurations were made exactly as on this one and which even has a poorer hardware configuration, but the performance on this is significantly better with the same load and a similar number of websites. Here, however, all websites share a pool.
It is clear to me that it makes sense to set the resources for individual websites individually in order to avoid a high number of hits on one page affecting the performance of the other pages. In this case, however, this is explicitly desired.
Finally, my question. Is it possible to have all / or some of the websites explicitly use the same pool?