Re: [RFC][PATCH] Check write to slab memory which freed alreadyusing mudflap

[David Rientjes]

On Fri, 10 Jul 2009, Ingo Molnar wrote:

> > SLAB is (slowly) going away so you might want to port this to SLUB 
> > as well so we can merge both.
> 
> and SLQB which will replace both? :-/
> 

I'm not sure what the status of slqb is, although I would have expected it 
to have been pushed for inclusion in 2.6.31 as a slab allocator 
alternative.  Nick, any forecast for inclusion?

SLUB has a pretty noticeable performance degradation on benchmarks such as 
netperf TCP_RR with high numbers of threads (see my post about it: 
http://marc.info/?l=linux-kernel&m=123839191416472).  CONFIG_SLAB is the 
optimal configuration for workloads that share similiar slab thrashing 
patterns (which my patchset dealt with in an indirect way and yet still 
didn't match slab's performance).  I haven't yet seen data that suggests 
anything other than CONFIG_SLAB has parity with such a benchmark.
--
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/