Automatic page sharing/consolidation

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From: Enrico Weigelt
Date: Tuesday, April 15, 2008 - 6:30 pm

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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Messages in current thread:
Automatic page sharing/consolidation, Enrico Weigelt, (Tue Apr 15, 6:30 pm)
Re: Automatic page sharing/consolidation, Avi Kivity, (Wed Apr 16, 4:41 am)
Re: Automatic page sharing/consolidation, Izik Eidus, (Wed Apr 16, 5:51 am)