Michele

By the way for a swift runtimes images including swift4 you can use the
current repo runtime for Swift here
https://github.com/apache/incubator-openwhisk-runtime-swift

— Carlos
On Thu, Feb 22, 2018 at 5:03 PM Carlos Santana <csantan...@gmail.com> wrote:

> Great progress
> On Thu, Feb 22, 2018 at 10:05 AM Rodric Rabbah <rod...@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 <openwh...@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
>> >  openwh...@sciabarra.com
>>
>

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