Possible solutions of your questions

Hello. in stateseach described optimization methods in most of the admin site, you already prvodil what are the optimizations?

many listed in the article already comes by default on the server.

on other servers we are not working . compression and caching systems such as

one of the comments to your articles

1) If thoughtlessly to use all of the above, then the speed may increase to complete failure of the website :)
2) If you have already installed mechanisms of the cache is three times according to every action.
3) before you start acceleration, you should fix all errors scripts and templates that are written in the logs.
4) third-Party modules puts in the least when their funds to speed up fails.
generally, the article is not a step by step guide, but rather a list of possible ways some of them are better not to combine.

ie, you need to first decide what is missing, and then to take on ha optimization. work with the site, see what`s missing and what you need to focus, and it will be possible to optimize bottlenecks. and that really can be optimizirovat to complete failure.