output's cache and performance

[eluser]Bad Penguin[/eluser]
[quote author="toopay" date="1311844063"]@tomcode, just wondering why you give an obvious knowledge of how to turn on the CI Log, while he asking about (or at least his concern is) app performance?
[quote author="Bad Penguin" date="1311774216"]I am trying to use $this->output->cache(600) to reduce loading time of my pages.
...
I wonder what is taking so much time:
- apache+php itself
- $this->output->cache(600); placeced in wrong position (i have it in MY_Controller.php)
- something else

Any suggestions?[/quote][/quote]

In the end he was right, i've MY_Output class that will bypass cache if the client IP is from our development office. I'll check tonight from home again