Re: [S+Q2 00/19] SLUB with queueing (V2) beats SLAB netperf TCP_RR

[Christoph Lameter]

On Sat, 10 Jul 2010, Heinz Diehl wrote:

> On 10.07.2010, Christoph Lameter wrote:
>
> > The following patchset cleans some pieces up and then equips SLUB with
> > per cpu queues that work similar to SLABs queues. With that approach
> > SLUB wins significantly in hackbench and improves also on tcp_rr.
>
> The patchset applies cleanly, however compilation fails with
>
> [....]
> mm/slub.c: In function âalloc_kmem_cache_cpusâ:
> mm/slub.c:2093: error: negative width in bit-field â<anonymous>â
> make[1]: *** [mm/slub.o] Error 1
> make: *** [mm] Error 2
> make: *** Waiting for unfinished jobs....
> [....]

You need a sufficient PERCPU_DYNAMIC_EARLY_SIZE to be configured. What
platform is this? Tejon: You suggested the BUILD_BUG_ON(). How can he
increase the early size?