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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 Please visit the OpenSource QM Taskforce:

 	http://wiki.metux.de/public/OpenSource_QM_Taskforce

 Patches / Fixes for a lot dozens of packages in dozens of versions:

	http://patches.metux.de/

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Izik (copied) is working on this for kvm.  Results so far are very

encouraging, but currently merged pages are not swappable.
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error compiling committee.c: too many arguments to function
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we have module that posted with kernel patchs in the mm list, you can actualy run it and play with it

there were some bugs that we fixed with it, but i am still not sending it, beacuse i change there quite alot of things

in order to get swapping possible for the pages that are shared.

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woof.

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