if you run ordinary setups for php think about using the xcache opcode cache. it will make your TYPO3 backend and frontend faster.
while this knowledge is wide spread, i´d like to express my feelings about a very responsive t3 backend after giving more meat to the xcache size. put 80Ms there. xcache comes with a nice admin log which shows the cache hits and misses, here are the explanations.
the t3 backend (the newer the better) is lightning fast even on larger installations (hundreds of editors) due to high cache count of necessary php files. uhm, and before i forget: of course the database server must be cool, too — or you will wait for the queries to be finished and thus all the php engine speed would idle around.
Happy for You. Did You have other caching extension installed before ? As Zend optimizer, or APC ?
i prefer xcache a long time now. did use eaccellerator years ago but in terms of maintability and stability xcache it is.
Just replaced Zend Optimiser by php5-xcache, and it gives 30-40% of performance more in FE and BE, so it’s very good result. The TYPO3 backend bacame to be much more responsive.