Re: [PATCH mm] slab: implement bulking for SLAB allocator

On Tue, 8 Sep 2015, Jesper Dangaard Brouer wrote: > Also notice how well bulking maintains the performance when the bulk > size increases (which is a soar spot for the slub allocator). Well you are not actually completing the free action in SLAB. This is simply queueing the item to be freed

Re: [PATCH mm] slab: implement bulking for SLAB allocator

On Tue, 8 Sep 2015 10:22:32 -0500 (CDT) Christoph Lameter wrote: > On Tue, 8 Sep 2015, Jesper Dangaard Brouer wrote: > > > Also notice how well bulking maintains the performance when the bulk > > size increases (which is a soar spot for the slub allocator). > > Well you are not

Re: [PATCH mm] slab: implement bulking for SLAB allocator

On Tue, 8 Sep 2015, Jesper Dangaard Brouer wrote: > This test was a single CPU benchmark with no congestion or concurrency. > But the code was compiled with CONFIG_NUMA=y. > > I don't know the slAb code very well, but the kmem_cache_node->list_lock > looks like a scalability issue. I guess that