HeisSpiter/ksm_preload

If you have multiple processes generating similar data (like multiple applications serving different vhosts), this easy to use tool may allow you to spare memory by deduplicating it. If two pages (typically consecutive blocks of 4k) are identical, they will be merged to reduce memory usage.

= Introduction =

Enables legacy applications to leverage Linux's memory deduplication.
Only works on Linux ≥ 2.6.32.

If you have multiple processes generating similar data (like multiple
applications serving different vhosts), this easy to use tool may
allow you to spare memory by deduplicating it. If two pages (typically
consecutive blocks of 4k) are identical, they will be merged to reduce
memory usage.

= More =

More information, howto, on : http://vleu.net/ksm_preload/ .