Re: [RFC PATCH v8 1/9] Restartable sequences system call

On Mon, Aug 29, 2016 at 03:16:52PM +0000, Mathieu Desnoyers wrote:

----- On Aug 27, 2016, at 12:22 AM, Josh Triplett josh-iaAMLnmF4UmaiuxdJuQwMA@public.gmane.org wrote:

quoted

Ben, Mathieu, Dave, do you have jemalloc benchmark numbers with and
without rseq?  (As well as memory usage numbers for the reduced memory
usage of per-CPU pools rather than per-thread pools?)

Before I started reimplementing rseq, the numbers presented by Facebook
at https://lkml.org/lkml/2015/10/22/588 were in my opinion a good proof
that rseq is useful. I'm not sure if their memoryidler API was used back
then.

I could take Dave's jemalloc branch adapted to Paul Turner's rseq and
adapt it to mine. Then we could use this allocator to compare the
memory use and speed of heavily multi-threaded applications.

Thoughts ?

That seems like it would provide a good concrete benchmark of this work,
and demonstrate the value of it.