kmem_cache not showing in /proc/slabinfo

[becher.jannik at gmail.com]

Hi All,

I played a little bit around with kmem_cache_alloc() and
kmem_cache_create() and figured out that it only appears
in /proc/slabinfo if I reserve a specific amount of memory.
Isn't it always preferable to precache space for often used
structs even for small structs?

I'm not sure whether I understood it right how it works.
But how does the kernel know for how many structs he should
preallocate memory?

Best regards
Jannik Becher