Replace cache size graph by pages allocation graph

Hello,

cache size graph is not very interesting as it show the ratio of cached data 
size over maximum allocated size, ignoring waste space. It means even when the 
cache is full, the graph will not be at 100% space used.

Here is a patch replacing it with an overview of non-allocated pages available. 
It also changes the color of the box when ratio of free pages becomes too low 
(using styles introduced in the patch I submitted in #7).

I needed to change the merge function so that it can merge slabs information 
(maybe some other fields would need to be simply kept as is instead of being 
summed).

Having the slabs information in the main page should also be useful for other 
interesting global indicators.

Regards,
Colin

Original issue reported on code.google.com by colin.pi...@gmail.com on 12 Jan 2011 at 2:52

Attachments:

pages_allocation_graph.diff

posixpascal / phpmemcacheadmin

Replace cache size graph by pages allocation graph #8