Automatic page sharing/consolidation

[Enrico Weigelt]

Hi folks,

I'm using dozens of VE's / jails to separate applications
(even complete webapps w/ their own httpd) for easier maintenance
and better security. But this tends to consume a lot of memory,
since code sharing (.so's) cannot take effect here (each jail/VE
has it's completely own tree). 

Now I wonder if it might be possible to let the kernel automatically
find out equal pages and map them together. 

A little compasion showed up that at least 50% of the code could be
shared (maybe more with some tuning, and maybe even data). So it's
(IMHO) really worth it.

Would this be possible ? What had to be done for this ?


thx
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 Enrico Weigelt    ==   metux IT service - http://www.metux.de/
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