From mboxrd@z Thu Jan  1 00:00:00 1970
From: becher.jannik@gmail.com (becher.jannik at gmail.com)
Date: Tue, 27 Sep 2016 10:53:00 +0200
Subject: kmem_cache not showing in /proc/slabinfo
Message-ID: <20160927085300.c6hqolqwssfrgo5j@breaker.fritz.box>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

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