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 ‘alloc_kmem_cache_cpus’: > mm/slub.c:2093: error: negative width in bit-field ‘<anonymous>’ > 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?