[go-nuts] Re: blocking profiler
On Wednesday, April 4, 2018 at 2:59:06 PM UTC+2, Dave Cheney wrote:
>
> You can report issues with Go at this link, golang.org/issue/new.
>
> However, this looks like a docker weirdness so we cannot help you as the
> bug isn't in go, it's docker weirdness.
>
> Please try their support forums, sorry I don't have those details, i've
> never tried to get support for their product.
>
thanks Dave.
>
> On Wednesday, 4 April 2018 21:52:08 UTC+10, sothy shan wrote:
>>
>>
>>
>> On Tuesday, April 3, 2018 at 4:50:36 PM UTC+2, Dave Cheney wrote:
>>>
>>> I’ve not seen that problem before. I’d hazard a guess that it’s an
>>> incorrect go installation. Don’t set goroot, basically ever. But it’s just
>>> a guess.
>>>
>> It is basically problem when I run in docker container. This is sample
>> program.
>>
>> ++
>> package main
>>
>> import (
>> "os"
>> "runtime/pprof"
>> "runtime"
>> "fmt"
>> )
>>
>> func main() {
>> f,_ :=os.Create("./ipcore_blocking.prof")
>>
>> runtime.SetBlockProfileRate(1)
>>
>> defer func() {
>> if err := pprof.Lookup("block").WriteTo(f,0); err
>> !=nil {
>> fmt.Printf("blocking profiler statistic
>> collecition initialization failed: %v", err)
>> }
>>
>> f.Close()
>> runtime.SetBlockProfileRate(0)
>>}()
>> // create new channel of type int
>> ch := make(chan int)
>>
>> // start new anonymous goroutine
>> go func() {
>> // send 42 to channel
>> ch <- 42
>> }()
>> // read from channel
>> <-ch
>> }
>> +
>> When I run localhost, it workes well. when I tries to run docker
>> container, it didnt work. I can give my dockerfile here.
>> FROM golang:1.9-alpine as dev
>>
>> +++
>> RUN apk add --no-cache --repository
>> http://dl-3.alpinelinux.org/alpine/edge/community upx
>>
>> WORKDIR /go/src/project
>>
>>
>> COPY ./main.go /go/src/project
>> RUN go build -o /bin/project
>>
>> FROM scratch
>> COPY --from=dev /bin/project /bin/project
>> ENTRYPOINT ["/bin/project"]
>>
>> +
>> I have another problem when I run in Docker with CPU profile.
>>
>> In this case where to report the issues?
>>
>> Best regards
>> Sothy
>>
>>>
>>> Are you able to create a stand alone program that demonstrates the issue
>>> with the profile? Please consider raising a bug, golang.org/issue/new
>>
>>
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[go-nuts] Re: blocking profiler
On Tuesday, April 3, 2018 at 4:50:36 PM UTC+2, Dave Cheney wrote:
>
> I’ve not seen that problem before. I’d hazard a guess that it’s an
> incorrect go installation. Don’t set goroot, basically ever. But it’s just
> a guess.
>
It is basically problem when I run in docker container. This is sample
program.
++
package main
import (
"os"
"runtime/pprof"
"runtime"
"fmt"
)
func main() {
f,_ :=os.Create("./ipcore_blocking.prof")
runtime.SetBlockProfileRate(1)
defer func() {
if err := pprof.Lookup("block").WriteTo(f,0); err !=nil
{
fmt.Printf("blocking profiler statistic collecition
initialization failed: %v", err)
}
f.Close()
runtime.SetBlockProfileRate(0)
}()
// create new channel of type int
ch := make(chan int)
// start new anonymous goroutine
go func() {
// send 42 to channel
ch <- 42
}()
// read from channel
<-ch
}
+
When I run localhost, it workes well. when I tries to run docker container,
it didnt work. I can give my dockerfile here.
FROM golang:1.9-alpine as dev
+++
RUN apk add --no-cache --repository
http://dl-3.alpinelinux.org/alpine/edge/community upx
WORKDIR /go/src/project
COPY ./main.go /go/src/project
RUN go build -o /bin/project
FROM scratch
COPY --from=dev /bin/project /bin/project
ENTRYPOINT ["/bin/project"]
+
I have another problem when I run in Docker with CPU profile.
In this case where to report the issues?
Best regards
Sothy
>
> Are you able to create a stand alone program that demonstrates the issue
> with the profile? Please consider raising a bug, golang.org/issue/new
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[go-nuts] Re: blocking profiler
On Saturday, March 31, 2018 at 12:15:34 AM UTC+2, Dave Cheney wrote:
>
> It looks like you’re stopping the block profile immediately after starting
> it.
>
> Try github.com/pkg/profile which will take care of the plumbing for you.
Thanks Dave for pointing your code.
After viewing your code, I corrected my code.
f,err :=os.Create("/tmp/test_blocking.prof")
if err != nil {
log.WithError(err).Fatal("creation of blocking
profiler file is failed" )
}
runtime.SetBlockProfileRate(1)
defer func() {
if err := pprof.Lookup("block").WriteTo(f,0); err
!=nil {
log.WithError(err).Fatal("blocking profiler
statistic collecition initialization failed")
}
f.Close()
runtime.SetBlockProfileRate(0)
}()
Now I am getting block profile information. When I run the go tool pprof, I
got nothing in the result. Why?
go tool pprof test_blocking.prof
Main binary filename not available.
Type: delay
Entering interactive mode (type "help" for commands, "o" for options)
(pprof) top30
Showing nodes accounting for 13.16mins, 100% of 13.16mins total
flat flat% sum%cum cum%
13.16mins 100% 100% 13.16mins 100%
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[go-nuts] blocking profiler
Hello,
I want to use blocking profiler in my go application. I use go1.10. My
applcation is running as docker instance?.
I include the following code into my application.
f,err :=os.Create("/tmp/test_blocking.prof")
if err != nil {
log.WithError(err).Fatal("creation of blocking
profiler file is failed" )
}
runtime.SetBlockProfileRate(1)
if err := pprof.Lookup("block").WriteTo(f,1); err !=nil {
log.WithError(err).Fatal("blocking profiler statistic
collecition initialization failed")
}
defer f.Close()
I got the prof file, there is no data. Where is wrong?
Thanks
Sothy
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[go-nuts] cpu profiling in container does not working
Hello, I am using go application as service in linux docker environment. My application is given 1 cpu when defining docker-compose file. I enabled to cpu profiler within my application. After running my testing, I stop my container and using docker cp, I copied test.prof into local host. There is no data in the test.prof file. But when I define two cpus for my service, test.prof file has data. Why does not working in this sitation? Thanks docker-compose v2.2 go version go1.10 linux/amd64 Best regards Sothy -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
