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From Carlos Santana <csantan...@gmail.com>
Subject Re: 250 times faster swift actions with the Go server...
Date Thu, 22 Feb 2018 22:03:06 GMT
Great progress
On Thu, Feb 22, 2018 at 10:05 AM Rodric Rabbah <rodric@gmail.com> wrote:

> This is great. The use of python as the proxy was a historical
> convenience. Your changes are shaping up nicely; thanks for pushing it
> forward.
>
> -r
>
> > On Feb 22, 2018, at 6:08 AM, Michele Sciabarra <openwhisk@sciabarra.com>
> wrote:
> >
> > After spending a session of learning way more swift I ever wanted to
> know, I hacked an horrible sample of Swift code implementing the Hello
> World as a read-stdin-write-std-out loop.
> >
> > The code in all his ugliness I do not dare to post is here:
> >
> >
> https://github.com/sciabarracom/openwhisk-runtime-go/blob/pipe-loop/HelloSwift/Sources/Hello/main.swift
> >
> > However I used this example to to compare my new implementation in Go
> with the current one (as described in James Thomas blog post
> http://jamesthom.as/blog/2017/06/28/serverless-swift-with-openwhisk/) and
> this is the result:
> >
> > +----------+-------+------+------+------+------+------+-----+------+
> > |  Label   |   #   | Avg  | Med  | 90%  | 95%  | 99%  | Min | Max  |
> > +----------+-------+------+------+------+------+------+-----+------+
> > | Current  | 10000 | 1097 | 1101 | 1169 | 1191 | 1243 |  19 | 2132 |
> > | Go+Swift | 10000 |    4 |    4 |    6 |    6 |   10 |   2 | 1030 |
> > | TOTAL    | 20000 |  551 |   66 | 1148 | 1169 | 1221 |   2 | 2132 |
> > +----------+-------+------+------+------+------+------+-----+------+
> >
> > To be honest I am not sure why. As far as I know, Swift support  is
> implemented as a read-write loop too (or at least this is what looks like
> to a quick look to the code), however python is not famous to be a
> performing language (and I suspect the Global Interpreter Lock may play a
> role in those numbers).
> >
> > I did also a comparison of Go and Swift running under my new
> implementation. Implemented in this way , the are basically the same speed.
> >
> > However it is worth to be noted that the image for Golang only is 10MB,
> but if I have to add swift support you need a lot of libraries on it. I
> used a docker image based on ibmcom/ubuntu-swift but it is huge (1.8G!), I
> think a trimmed down version is needed.
> >
> > All the code is in my repo in the pipe-loop branch. Now I think I will
> have to take the time to clean up the code and make it robust.
> >
> >
> > --
> >  Michele Sciabarra
> >  openwhisk@sciabarra.com
>

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