github.com/MetalBlockchain/subnet-evm@v0.4.9/metrics/cpu_enabled.go (about)

     1  // (c) 2022, Ava Labs, Inc.
     2  //
     3  // This file is a derived work, based on the go-ethereum library whose original
     4  // notices appear below.
     5  //
     6  // It is distributed under a license compatible with the licensing terms of the
     7  // original code from which it is derived.
     8  //
     9  // Much love to the original authors for their work.
    10  // **********
    11  // Copyright 2020 The go-ethereum Authors
    12  // This file is part of the go-ethereum library.
    13  //
    14  // The go-ethereum library is free software: you can redistribute it and/or modify
    15  // it under the terms of the GNU Lesser General Public License as published by
    16  // the Free Software Foundation, either version 3 of the License, or
    17  // (at your option) any later version.
    18  //
    19  // The go-ethereum library is distributed in the hope that it will be useful,
    20  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    21  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    22  // GNU Lesser General Public License for more details.
    23  //
    24  // You should have received a copy of the GNU Lesser General Public License
    25  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    26  
    27  //go:build !ios && !js
    28  // +build !ios,!js
    29  
    30  package metrics
    31  
    32  import (
    33  	"github.com/ethereum/go-ethereum/log"
    34  	"github.com/shirou/gopsutil/cpu"
    35  )
    36  
    37  // ReadCPUStats retrieves the current CPU stats.
    38  func ReadCPUStats(stats *CPUStats) {
    39  	// passing false to request all cpu times
    40  	timeStats, err := cpu.Times(false)
    41  	if err != nil {
    42  		log.Error("Could not read cpu stats", "err", err)
    43  		return
    44  	}
    45  	if len(timeStats) == 0 {
    46  		log.Error("Empty cpu stats")
    47  		return
    48  	}
    49  	// requesting all cpu times will always return an array with only one time stats entry
    50  	timeStat := timeStats[0]
    51  	stats.GlobalTime = int64((timeStat.User + timeStat.Nice + timeStat.System) * cpu.ClocksPerSec)
    52  	stats.GlobalWait = int64((timeStat.Iowait) * cpu.ClocksPerSec)
    53  	stats.LocalTime = getProcessCPUTime()
    54  }