Re: [PATCH 0/1] mm: Remove the SLAB allocator
From: Andrew Morton
Date: Tue Apr 16 2019 - 23:52:17 EST
On Fri, 12 Apr 2019 12:28:16 +0100 Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx> wrote:
> On Wed, Apr 10, 2019 at 02:53:34PM -0700, David Rientjes wrote:
> > > FWIW, our enterprise kernel use it (latest is 4.12 based), and openSUSE
> > > kernels as well (with openSUSE Tumbleweed that includes latest
> > > kernel.org stables). AFAIK we don't enable SLAB_DEBUG even in general
> > > debug kernel flavours as it's just too slow.
> > >
> > > IIRC last time Mel evaluated switching to SLUB, it wasn't a clear
> > > winner, but I'll just CC him for details :)
> > >
> > We also use CONFIG_SLAB and disable CONFIG_SLAB_DEBUG for the same reason.
> Would it be possible to re-evaluate using mainline kernel 5.0?
I have vague memories that slab outperforms slub for some networking
loads. Could the net folks please comment?