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main.go
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main.go
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// Copyright 2019 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// [START profiler_quickstart]
// Sample profiler_quickstart simulates a CPU-intensive workload for profiler.
package main
import (
"log"
"runtime"
"cloud.google.com/go/profiler"
)
func busyloop() {
for {
load()
// Make sure to yield so that the profiler thread
// gets some CPU time even on single core machines
// where GOMAXPROCS is 1. Not needed in real programs
// as typically the preemption happens naturally.
runtime.Gosched()
}
}
func load() {
for i := 0; i < (1 << 20); i++ {
}
}
func main() {
err := profiler.Start(profiler.Config{
Service: "hello-profiler",
NoHeapProfiling: true,
NoAllocProfiling: true,
NoGoroutineProfiling: true,
DebugLogging: true,
// ProjectID must be set if not running on GCP.
// ProjectID: "my-project",
})
if err != nil {
log.Fatalf("failed to start the profiler: %v", err)
}
busyloop()
}
// [END profiler_quickstart]