Re: GSlice vs. tcmalloc vs. jemalloc

["stefan skoglund(agj)" <stefan skoglund agj net>]

tis 2013-05-07 klockan 14:52 -0500 skrev Federico Mena Quintero:
> On Sat, 2013-05-04 at 22:10 +0200, stefan skoglund(agj) wrote:
>
> > Do GSlice use the Solaris feature for memory usage levelling (an
> > important feauture because of the fact that the SPARCCenter 2000 had
> > striped RAM.)
> >
> > Important that in this case that if you hit multiple structs of the same
> > type for example a tree-walk you should avoid hitting the same memory
> > bank multiple times in a row.
>
> Ummmm, do you mean the cache coloring stuff?  I.e. so that structs of
> the same size get put in different cache lines.
>
> I don't recall mentions of "memory usage levelling"; to what does that
> refer?
>
>   Federico

It is an improper term but yes it is cache coloring functionality.

The SPARCCenter2000 was built on two XD-busses (the main system-buss)
with all CPU-cards connected to both busses and with equal access to
memory for every card (cpu cards can be memory only, with cpus and
memory or only cpus.)

The memory is striped in 256-bytes stripes on the 2 XD-busses which
means that that coloring stuff is even more important.

Memory bank in my earlies email = XD-buss