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 >
