Open Stack

Well put, Clay.  Totally Agree.

On Fri, May 8, 2015 at 10:19 AM, Clay Gerrard <clay.gerrard at gmail.com> wrote:
>
>
> On Thu, May 7, 2015 at 5:05 PM, Adam Lawson <alawson at aqorn.com> wrote:
>>
>> what sort of limitations have you discovered that had to do specifically
>> with the fact we're using Python?
>
>
> Python is great.  Conscious decision to optimize for developer wall time
> over cpu cycles has made it a great language for 20 years - and probably
> will for another 20 at *least* (IMHO).
>
> I don't think you would pick out anything to point at as a "limitation" of
> python that you couldn't point at any dynamic interpreted language, but my
> list is something like this:
>
> Dynamic Interpreted Runtime overhead
> Eventlet non-blocking hub is NOT OK for blocking operations (cpu, disk)
> OTOH, dispatch to threads has overhead AND GIL
> non-byte-aligned buffers restricts access to O_DIRECT and asyncio
>
> *So often* this kinda stuff just doesn't matter.  Or even lots of times even
> when it *does* matter - it doesn't matter that much in the grand scheme of
> things.  Or maybe it matters a non-trivial amount, *but* there's still other
> things that just mater more *right now*.  I think Swift has been in that
> last case for a long time, maybe we still are - great thing about
> open-source is redbo can publish an experiment on a feature branch in gerrit
> and in-between the hard work of testing it - we can pontificate about it on
> the mailing list!  ;)
>
> FWIW, I don't think anyone should find it particularly surprising that a
> mature data-path project would naturally gravitate closer to the metal in
> the critical paths - it shouldn't be a big deal - unless it all works out -
> and it's $%^&! tons faster - then BOOYAH! ;)
>
> But I'd suggest you be very careful not to draw any assumptions in general
> about a great language like python even if this one time this one project
> thought maybe they should find out if some part of the distributed system
> might be better by some measure in something not-python.  ;)
>
> Cheers,
>
> -Clay
>
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-- 
Regards
Huang Zhiteng