> Am 10.12.2017 um 20:35 schrieb Yann Lesage <yannle...@gmail.com>: > > > >> Le 10/12/2017 à 19:18, Sven Van Caekenberghe a écrit : >> >>>> On 9 Dec 2017, at 18:34, Yann Lesage <yannle...@gmail.com> wrote: >>>> >>>> >>>> >>>> Le 09/12/2017 à 15:52, Sven Van Caekenberghe a écrit : >>>> Hi Yann, >>>> >>>> Zinc HTTP Components can do 1000s of requests per second, to localhost (so >>>> excluding a real network) and using a single ZnClient instance with a >>>> reused connection (HTTP/1.1's default). Of course, data size is also a >>>> factor, I am talking about small requests/responses. >>>> >>>> I browsed your code a bit on GitHub. You do reuse an instance, so that is >>>> good. But I think you are using HTTPS (TLS), which is a real slowdown >>>> (encryption is native, but costs real resources). Also, your data payload >>>> is using JSON which also adds a cost (parsing, generating). >>> Thanks for this review. >>>> So what you measured sounds about right. You might be able to optimise a >>>> bit, but that won't give you a factor 10 improvement, IMHO. The trick is >>>> usually to make as few requests as possible. >>> A factor of 10 maximum ? Ok, this indication help me. >> If you cache and reuse a single ZnClient instance, that is already good. >> Maybe try once without SSL to see how much difference that makes. You could >> also try to disable logging. As in >> >> ZnClient new in: [ :client | >> [ client get: 'http://localhost:8080' ] benchFor: 5 seconds ]. >> >> vs. >> >> ZnClient new in: [ :client | >> client loggingOff. >> [ client get: 'http://localhost:8080' ] benchFor: 5 seconds ]. >> >> You can also try to run in a Time profiler, but the server time is hard to >> abstract away from. > Use SSL or not is set by ZNCLient in fonction of url (http or https), no ? If > there an option to set completely off SSL, I don't think is a good idea to > use it. SSL is a real improve in security when we connect to a distant server. > It depends on what need. If you try to get maximum performance you should try without SSL to see the difference and tell us ;) Be able to use SSL enables easy setups of multiple hosts with a standalone application. If you need maximum performance the apllication setup might be different. The OS can add encryption transparently and much faster. What we use is several machines with a second network card and a private switch where they are attached to. So no need to add extra security
> For the logs, I did not see that they were active by default. LoggingOff > improve the perf thanks. > > I have already look with a TimeProfiler, and yes, it's difficult to extract > an information. > >> >>> For the trick, I know it. But it's must be performed by user no ? >> Yes, the more you do in a single netwerk round trip, the better. Aggregation >> is good. > > Aggregation is possible for user with AQL(Arango Query Langage). > >>>> Sven >>>> >>>>> On 8 Dec 2017, at 16:32, Yann Lesage <yannle...@gmail.com> wrote: >>>>> >>>>> Hello, >>>>> >>>>> >>>>> I write an driver for Arangodb . So like it's indicated in Arango >>>>> documentation, I use the HTTP API. The repo is >>>>> https://github.com/Valtena/Pharango >>>>> >>>>> >>>>> Now, the problem : Arango using Znclient make around 1 000 >>>>> requests/second. >>>>> >>>>> >>>>> And the question : Are there any recommended pratice to have the better >>>>> performance with ZNClient or a better way to perform lot of HTTP requests >>>>> ? >>>>> >>>>> >>>>> Thanks for your attention, >>>>> >>>>> Yann Lesage >>>>> >>>>> >>>>> >>> >> >
