On Thu 02-08-12 20:20:25, Shawn Joo wrote: > Dear Experts, > > I would like to know a mechanism, how to increase the number of object and where the memory is from. > > (because when cache is created by "kmem_cache_create", there is only object size, but no number of the object) > For example, "size-65536" does not have available memory from below dump. > In that state, if memory allocation is requested to "size-65536", Is this a follow up for http://www.spinics.net/lists/linux-mm/msg39252.html? It would be better to follow the thread in that case. > 1. How to allocate/increase the number of object on "size-65536"? Object count is increased automatically and transparently for the cache users. Why would you want to control its size from the outside? > 2. Where is the new allocated memory from? (from buddy?) page allocator when it cannot find any room in the internally available space. Have a look at [1] if you want to learn more about the slab allocator (the code has changed since then but the princibles are still valid). [1] http://kernel.org/doc/gorman/html/understand/understand011.html -- Michal Hocko SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>