Very interesting paper: An Analysis of Linux Scalability to
many Cores
stephano zanzin
me at zan.st
Mon Oct 4 15:43:06 UTC 2010
Very interesting! Thanks
On Fri, Oct 1, 2010 at 4:05 PM, Andre Oppermann <oppermann at networx.ch>wrote:
> Just saw the link to a very interesting paper on SMP scalability.
> A very good read and highly relevant for our efforts as well. In
> certain areas we may already fare better, in others we still have
> some work to do.
>
> An Analysis of Linux Scalability to many Cores
>
> ABSTRACT
> This paper analyzes the scalability of seven system applications
> (Exim, memcached, Apache, PostgreSQL, gmake, Psearchy, and MapReduce)
> running on Linux on a 48-core computer. Except for gmake, all
> applications trigger scalability bottlenecks inside a recent Linux
> kernel. Using mostly standard parallel programming techniques—
> this paper introduces one new technique, sloppy counters—
> these bottlenecks can be removed from the kernel or avoided by
> changing the applications slightly. Modifying the kernel required
> in total 3002 lines of code changes. A speculative conclusion from
> this analysis is that there is no scalability reason to give up on
> traditional operating system organizations just yet.
>
> http://pdos.csail.mit.edu/papers/linux:osdi10.pdf
>
> --
> Andre
>
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--
stephano
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