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// Copyright (C) 2019-2023 Algorand, Inc.
// This file is part of go-algorand
//
// go-algorand is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// go-algorand is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with go-algorand. If not, see <https://www.gnu.org/licenses/>.
package logging
import (
"context"
"runtime"
"sync"
"time"
"github.com/algorand/go-algorand/util"
"github.com/algorand/go-algorand/util/metrics"
)
var ramUsageGauge = metrics.MakeGauge(metrics.MetricName{Name: "algod_ram_usage", Description: "number of bytes runtime.ReadMemStats().HeapInuse"})
// UsageLogThread utility logging method
func UsageLogThread(ctx context.Context, log Logger, period time.Duration, wg *sync.WaitGroup) {
if wg != nil {
defer wg.Done()
}
var now time.Time
var prevUtime, prevStime int64
var Utime, Stime int64
var prevTime time.Time
var mst runtime.MemStats
ticker := time.NewTicker(period)
hasPrev := false
for true {
select {
case <-ticker.C:
case <-ctx.Done():
return
}
now = time.Now()
Utime, Stime, _ = util.GetCurrentProcessTimes()
runtime.ReadMemStats(&mst)
ramUsageGauge.Set(uint64(mst.HeapInuse))
if hasPrev {
userNanos := Utime - prevUtime
sysNanos := Stime - prevStime
wallNanos := now.Sub(prevTime).Nanoseconds()
userf := float64(userNanos) / float64(wallNanos)
sysf := float64(sysNanos) / float64(wallNanos)
log.Infof("usage nanos wall=%d user=%d sys=%d pu=%0.4f%% ps=%0.4f%% inuse=%d", wallNanos, userNanos, sysNanos, userf*100.0, sysf*100.0, mst.HeapInuse)
} else {
hasPrev = true
}
prevUtime = Utime
prevStime = Stime
prevTime = now
}
}
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