Your stacktrace is truncated; the crucial part appears at the top of the
output starting with
panic:
or
runtime error:
On Tuesday, 27 June 2017 14:31:57 UTC+10, Nupur Bansal wrote:
>
> When a load test is run on my service, after about 1000-1500 requests, I
> get this stack trace. I am unable to resolve why it was generated.
> Yes, the output from the service is passed to an output channel and is
> read through that channel.
>
> I am doing something like this:
> package main
>
> import (
> "fmt"
> //"time"
> )
>
> func myFunc(done chan string) {
> // Doing something in parallel
> for i := 0; i < 10; i++ {
> fmt.Println(i)
> }
> fmt.Println("Hey! I do useless stuff!")
> done <- "I'm done!" // We send a message on the channel
> }
>
> func main() {
> done1 := make(chan string)
> done2 := make(chan string)
> go myFunc(done1)
> go myFunc2(done2)
> msg := <-done1
> msg2 := <-done2
> fmt.Println(msg, msg2)
>
> fmt.Println("Message received, you were indeed useless..")
> }
>
> func myFunc2(done chan string) {
> // Doing something in parallel
> for i := 10; i < 20; i++ {
> fmt.Println(i)
> }
> fmt.Println("Hey! Baby!")
> done <- "I'm again done!" // We send a message on the channel
> }
>
>
> On Thursday, June 22, 2017 at 8:09:33 PM UTC+5:30, Ian Lance Taylor wrote:
>>
>> On Wed, Jun 21, 2017 at 10:49 PM, <nupur....@indiamart.com> wrote:
>> >
>> > I am getting the following error when my services are being load
>> tested.
>> > I am new to goroutines and may be missing something in my
>> implementation.
>> > My service on being hit is running 2 goroutines that call an http
>> request.
>> > After both return , the response from both http requests is returned
>> into a
>> > channel.
>> > What could be the possible reason of the following stack trace of
>> error??
>>
>> What caused the stack trace? I would have expected to see something
>> at the start saying why it was generated, but I didn't.
>>
>> At first glance it looks like you have a deadlock somewhere. Is there
>> something reading from the channels?
>>
>> Ian
>>
>
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