Re: [PATCH] slub: limit number of slabs to scan in count_partial()

From: Christoph Lameter (Ampere)
Date: Mon Apr 15 2024 - 12:20:47 EST


On Sat, 13 Apr 2024, Jianfeng Wang wrote:

kmem_cache_shrink() will explicitly sort the partial lists to put the
partial pages in that order.


Realized that I’d do "echo 1 > /sys/kernel/slab/dentry/shrink” to sort the list explicitly.
After that, the numbers become:
N = 10000 -> diff = 7.1 %
N = 20000 -> diff = 5.7 %
N = 25000 -> diff = 5.4 %
So, expecting ~5-7% difference after shrinking.

That still looks ok to me.