On Tue, Jul 10, 2012 at 09:09:29PM +0200, Lars Heidieker wrote: > slight improvement on kmem(9): > > splitting the lookup table into two parts > - this reduces the size of the lookup table -> touching less cache-lines > (e.g. on 64bit down from 4096b to 1024b + 64b) > - expanding cache size up to PAGE_SIZE for larger then 4k PAGE_SIZE > machines (without blowing up the size of the lookup table further) > > The size check under DIAGNOSTIC is moved back to the start of the > allocated as it makes it more useful and we have given up the PAGE_SIZE > alignment for kmem(9) on allocations >= PAGE_SIZE. > > any objections?
Have you done any performance tests? How much of a difference does this make? eric
