DEPRECATED StackImpact Go Profiler - Production-Grade Performance Profiler: CPU, memory allocations, blocking calls, errors, metrics, and more
Home Page: https://stackimpact.com
License: Other
I am using one agent and I can see the updates in the dashboard. I can use the following APIs:
agent := stackimpact.NewAgent()
agent.Configure("key", "MyGoApp")
But I am not able to use other APIs as mentioned in the examples such as:
stackimpact.Options() or agent.Start()
segment := agent.MeasureSegment("Segment1")
defer segment.Stop()
subsegment := agent.MeasureSubsegment("Segment1", "Subsegment1")
defer subsegment.Stop()
DEPRECATED StackImpact Go Profiler - Production-Grade Performance Profiler: CPU, memory allocations, blocking calls, errors, metrics, and more
Hi, I have found at least two places in project where defer called in loop. To me, it is suspicious, and can be reason of non needed memory allocation. Maybe I'm wrong?
We will be adopting Modules with 1.13 and have seen that when importing stackimpact-go it is marked as "incompatible". It still works but I think something needs to be done on the stackimpact-go repo.
https://github.com/golang/go/wiki/Modules#how-are-versions-marked-as-incompatible
Hi,
func (a *Agent) Start(options Options) does not use Options.AutoProfiling value.
Does it mean Options.AutoProfiling option is not supported any more?
I know this was only just released in Go 1.11 but is this on the roadmap?
Hey guys,
I was looking into this and noticed that doesn’t seem to be App Engine compatible. On App Engine:
syscall library isn’t available.Is it possible that support could be added? There are a lot of Go applications running on App Engine.
Was there a decent alternative to this at all?
The StackImpact dashboard was totally perfect and I've not seen anything match it for Go applications anywhere else.
Anyone find anything?
I had added stackimpact to my program just to find where I have memory leaks
but unfortunately I experienced more memory leaks as before adding stackimpact.
There is only one of leak that I have screenshoted (I have watched few different points):
ROUTINE ======================== github.com/stackimpact/stackimpact-go/internal.(*APIRequest).post in /home/go/.gvm/pkgsets/go1.7/global/src/git
hub.com/stackimpact/stackimpact-go/internal/api_request.go
512.14kB 478.35MB (flat, cum) 13.72% of Total
. . 24: return ar
. . 25:}
. . 26:
. . 27:func (ar *APIRequest) post(endpoint string, payload map[string]interface{}) (map[string]interface{}, error) {
. . 28: reqBody := map[string]interface{}{
512.14kB 512.14kB 29: "runtime_type": "go",
. . 30: "runtime_version": runtime.Version(),
. . 31: "agent_version": AgentVersion,
. . 32: "app_name": ar.agent.AppName,
. . 33: "app_version": ar.agent.AppVersion,
. . 34: "app_environment": ar.agent.AppEnvironment,
. . 35: "host_name": ar.agent.HostName,
. . 36: "build_id": ar.agent.buildId,
. . 37: "run_id": ar.agent.runId,
. . 38: "run_ts": ar.agent.runTs,
. . 39: "sent_at": time.Now().Unix(),
. 8.02MB 40: "payload": payload,
. . 41: }
. . 42:
. . 43: reqBodyJson, _ := json.Marshal(reqBody)
. . 44:
. 469.83MB 45: var buf bytes.Buffer
. . 46: w := gzip.NewWriter(&buf)
. . 47: w.Write(reqBodyJson)
. . 48: w.Close()
. . 49:
. . 50: url := ar.agent.DashboardAddress + "/agent/v1/" + endpoint
So I have removed stackimpact and memory leaks decreased significally
Hello,I used the library stackimpact in my program yesterday. I found stackimpack itself allocated too much memory just now. Is there any way to optimize it ?
Running 2.0.1.
==================
==================
WARNING: DATA RACE
Read at 0x00c420694000 by goroutine 199:
math/rand.(*rngSource).Int63()
/usr/local/Cellar/go/1.8.3/libexec/src/math/rand/rng.go:231 +0x3f
math/rand.(*Rand).Int63()
/usr/local/Cellar/go/1.8.3/libexec/src/math/rand/rand.go:81 +0x51
math/rand.(*Rand).Int31()
/usr/local/Cellar/go/1.8.3/libexec/src/math/rand/rand.go:95 +0x38
math/rand.(*Rand).Int31n()
/usr/local/Cellar/go/1.8.3/libexec/src/math/rand/rand.go:130 +0x62
math/rand.(*Rand).Intn()
/usr/local/Cellar/go/1.8.3/libexec/src/math/rand/rand.go:144 +0x52
<company>/vendor/github.com/stackimpact/stackimpact-go/internal.(*Agent).uuid()
<company>/vendor/github.com/stackimpact/stackimpact-go/internal/agent.go:247 +0xd9
<company>/vendor/github.com/stackimpact/stackimpact-go/internal.(*Metric).createMeasurement()
<company>/vendor/github.com/stackimpact/stackimpact-go/internal/metric.go:388 +0xbb
<company>/vendor/github.com/stackimpact/stackimpact-go/internal.(*CPUReporter).report()
<company>/vendor/github.com/stackimpact/stackimpact-go/internal/cpu_reporter.go:209 +0x3bf
<company>/vendor/github.com/stackimpact/stackimpact-go/internal.(*CPUReporter).start.func2()
<company>/vendor/github.com/stackimpact/stackimpact-go/internal/cpu_reporter.go:88 +0x41
<company>/vendor/github.com/stackimpact/stackimpact-go/internal.NewTimer.func1.1()
<company>/vendor/github.com/stackimpact/stackimpact-go/internal/agent.go:308 +0x150
Previous write at 0x00c420694000 by goroutine 79:
math/rand.(*rngSource).Int63()
/usr/local/Cellar/go/1.8.3/libexec/src/math/rand/rng.go:231 +0x58
math/rand.(*Rand).Int63()
/usr/local/Cellar/go/1.8.3/libexec/src/math/rand/rand.go:81 +0x51
math/rand.(*Rand).Int31()
/usr/local/Cellar/go/1.8.3/libexec/src/math/rand/rand.go:95 +0x38
math/rand.(*Rand).Int31n()
/usr/local/Cellar/go/1.8.3/libexec/src/math/rand/rand.go:130 +0x62
math/rand.(*Rand).Intn()
/usr/local/Cellar/go/1.8.3/libexec/src/math/rand/rand.go:144 +0x52
<company>/vendor/github.com/stackimpact/stackimpact-go/internal.(*Agent).uuid()
<company>/vendor/github.com/stackimpact/stackimpact-go/internal/agent.go:247 +0xd9
<company>/vendor/github.com/stackimpact/stackimpact-go/internal.(*Metric).createMeasurement()
<company>/vendor/github.com/stackimpact/stackimpact-go/internal/metric.go:388 +0xbb
<company>/vendor/github.com/stackimpact/stackimpact-go/internal.(*ProcessReporter).reportMetric()
<company>/vendor/github.com/stackimpact/stackimpact-go/internal/process_reporter.go:72 +0x181
<company>/vendor/github.com/stackimpact/stackimpact-go/internal.(*ProcessReporter).report()
<company>/vendor/github.com/stackimpact/stackimpact-go/internal/process_reporter.go:136 +0x98d
<company>/vendor/github.com/stackimpact/stackimpact-go/internal.(*ProcessReporter).start.func1()
<company>/vendor/github.com/stackimpact/stackimpact-go/internal/process_reporter.go:48 +0x41
<company>/vendor/github.com/stackimpact/stackimpact-go/internal.NewTimer.func1.1()
<company>/vendor/github.com/stackimpact/stackimpact-go/internal/agent.go:308 +0x150
Goroutine 199 (running) created at:
<company>/vendor/github.com/stackimpact/stackimpact-go/internal.NewTimer.func1()
<company>/vendor/github.com/stackimpact/stackimpact-go/internal/agent.go:313 +0x267
Goroutine 79 (running) created at:
<company>/vendor/github.com/stackimpact/stackimpact-go/internal.NewTimer.func1()
<company>/vendor/github.com/stackimpact/stackimpact-go/internal/agent.go:313 +0x267
==================```
I have a simple application using stackimpact agent for testing, but it can't work when I run this app inside a container.
I found that the api address is agent-api.stackimpact.com and I usetcpdump to capture the packets but they are all encrypted, but I did see the traffic.
That's the simple program:
package main
import (
"fmt"
"net/http"
"github.com/stackimpact/stackimpact-go"
)
func handler(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "Hello world!")
}
func main() {
go func() {
agent := stackimpact.Start(stackimpact.Options{
AgentKey: "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
AppName: "hello-world-00",
})
span := agent.Profile()
defer span.Stop()
}()
http.HandleFunc("/", handler)
http.ListenAndServe(":8077", nil)
}Is there anything I missed?
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