Comment 349 for bug 620074

Does anybody know why the caches are not dropped after I echo 3 to drop_caches? I would expect that number to come down to 0 ideally but still few megs may be practically. What I see is after some usage of the system, the caches keep increasing and never go down with drop_caches. The graph is ever increasing. Almost like a leak of caches. Has anybody debugged this aspect? I think this is one of the primary reasons for slow down because memory is locked in the caches and new memory requests are swapping the crap out of the system.