Sure, will post when i do it. Will open a new thread then :)
On Monday, January 14, 2019 at 7:49:36 PM UTC+5:30, Rodolfo Azevedo wrote:
>
> Please, when you finish your workerpool can you share your code to me? I
> need to understand this.
>
> Thanks and Regards
>
> Rodolfo Azevedo
>
> Em seg, 14 de jan de 2019 às 10:16, Kasun Vithanage <alan...@gmail.com
> <javascript:>> escreveu:
>
>> I've deleted original post because it seems a problem with my code, will
>> try to use a WorkerPool and see the result :)
>> Thanks for support
>>
>> On Monday, January 14, 2019 at 6:38:27 PM UTC+5:30, Jesper Louis Andersen
>> wrote:
>>>
>>> This might not be due to Go, but rather due to a resource limit imposed
>>> by the operating system:
>>>
>>> # 5000. *. (1. -. 0.1954);;
>>> - : float = 4023.
>>>
>>> This is close to 4096, assuming a constant factor of other stuff needing
>>> resources. Also, as a first step, I'd recommend running your load generator
>>> on a host separate from the system under test. There are situations in
>>> which your load generator takes enough resources to mess with the SUT.
>>>
>>> On Mon, Jan 14, 2019 at 12:48 PM Kasun Vithanage <alan...@gmail.com>
>>> wrote:
>>>
>>>> I'm doing a simple load test with Apache JMeter. My ambition was to
>>>> benchmark a go server. Here is the code I've been using, its a simple web
>>>> server
>>>>
>>>> package main
>>>>
>>>>
>>>> import (
>>>> "fmt"
>>>> "log"
>>>> "net/http"
>>>> "runtime"
>>>> )
>>>>
>>>>
>>>> func handler(w http.ResponseWriter, r *http.Request) {
>>>> fmt.Fprintf(w, "welcome")
>>>> }
>>>>
>>>>
>>>> func main() {
>>>> runtime.GOMAXPROCS(runtime.NumCPU())
>>>> http.HandleFunc("/function", handler)
>>>> log.Fatal(http.ListenAndServe(":8080", nil))
>>>> }
>>>>
>>>> When i test the JMeter with 5000 users with Ramp Up Period 1s, Loop
>>>> Count 1 as stated below
>>>>
>>>> [image: Screenshot_27.png]
>>>>
>>>> The result is as follows, it has *around 20% error rate* for the HTTP
>>>> requests.
>>>>
>>>> [image: Screenshot_28.png]
>>>>
>>>> When i examine the reason for an error JMeter states that the *Connection
>>>> was refused* by host.
>>>>
>>>> I would like to know how to increase concurrency in here, at least not
>>>> dropping the connections in that rate. If the server handler code was bit
>>>> complex than this, the error rate is increasing to at least 80%.
>>>>
>>>> I tried the same kind of scenario with Java NIO(
>>>> *com.sun.net.httpserver*). It resulted better as it had a lower error
>>>> rate. But it caused a high latency when the work is done(Tested with same
>>>> load).
>>>>
>>>> --
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>>>>
>>>
>>>
>>> --
>>> J.
>>>
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