Re: [PATCH 0/6] fs: Scalability of sockets/pipes allocation/deallocationon SMP

[Christoph Lameter]

On Thu, 27 Nov 2008, Eric Dumazet wrote:

> The last point is about SLUB being hit hard, unless we
> use slub_min_order=3 at boot, or we use Christoph Lameter
> patch (struct file RCU optimizations)
> http://thread.gmane.org/gmane.linux.kernel/418615
>
> If we boot machine with slub_min_order=3, SLUB overhead disappears.


I'd rather not be that drastic. Did you try increasing slub_min_objects
instead? Try 40-100. If we find the right number then we should update
the tuning to make sure that it pickes the right slab page sizes.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/