Poor performance with CageFS and suEXEC daemon

[georgetasioulis]

Hello,

We recently changed our setup to use CageFS and run LSAPI as a suEXEC daemon, but we've seen a very noticeable decrease in page-to-page browsing load speeds.
All our customer websites seem to load slower when browsing from page to page (when you're in the homepage of a website and click to another page, you have to wait, and then after 3-5 seconds, then other page comes). Below are our settings:

=== "Slow" performance ===
+ Configuration -> Server
- General
- CloudLinux = CageFS
+ Configuration -> Server
- External App
- LSAPI App (lsphp5)
- Run on startup = suEXEC daemon

But when Cloudlinux support is set back to LVE, and suEXEC daemon is not used, speeds are back to normal and websites run fast again.

=== Fast performance ===
+ Configuration -> Server
- General
- CloudLinux = LVE
+ Configuration -> Server
- External App
- LSAPI App (lsphp5)
- Run on startup = Yes

I've tried to increase the I/O limit on CloudLinux LVE Manager (when in CageFS/suEXEC daemon mode), but this didn't help.

Any idea what can cause this "hanging" between page loads?