mirror of
https://gitee.com/milvus-io/milvus.git
synced 2024-12-04 12:59:23 +08:00
134 lines
2.9 KiB
Go
134 lines
2.9 KiB
Go
// Copyright (C) 2019-2020 Zilliz. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software distributed under the License
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// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
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// or implied. See the License for the specific language governing permissions and limitations under the License.
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package metricsinfo
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import (
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"sync"
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"github.com/shirou/gopsutil/cpu"
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"github.com/shirou/gopsutil/mem"
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"go.uber.org/zap"
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"github.com/milvus-io/milvus/internal/log"
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)
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var (
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icOnce sync.Once
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ic bool
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icErr error
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)
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// GetCPUCoreCount returns the count of cpu core.
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func GetCPUCoreCount(logical bool) int {
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c, err := cpu.Counts(logical)
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if err != nil {
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log.Warn("failed to get cpu counts",
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zap.Error(err))
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return 0
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}
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return c
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}
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// GetCPUUsage returns the cpu usage in percentage.
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func GetCPUUsage() float64 {
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percents, err := cpu.Percent(0, false)
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if err != nil {
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log.Warn("failed to get cpu usage",
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zap.Error(err))
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return 0
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}
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if len(percents) != 1 {
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log.Warn("something wrong in cpu.Percent, len(percents) must be equal to 1",
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zap.Int("len(percents)", len(percents)))
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return 0
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}
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return percents[0]
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}
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// GetMemoryCount returns the memory count in bytes.
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func GetMemoryCount() uint64 {
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icOnce.Do(func() {
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ic, icErr = inContainer()
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})
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if icErr != nil {
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log.Error(icErr.Error())
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return 0
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}
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// get host memory by `gopsutil`
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stats, err := mem.VirtualMemory()
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if err != nil {
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log.Warn("failed to get memory count",
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zap.Error(err))
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return 0
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}
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// not in container, return host memory
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if !ic {
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return stats.Total
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}
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// get container memory by `cgroups`
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limit, err := getContainerMemLimit()
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if err != nil {
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log.Error(err.Error())
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return 0
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}
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// in container, return min(hostMem, containerMem)
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if limit < stats.Total {
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return limit
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}
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return stats.Total
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}
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// GetUsedMemoryCount returns the memory usage in bytes.
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func GetUsedMemoryCount() uint64 {
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icOnce.Do(func() {
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ic, icErr = inContainer()
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})
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if icErr != nil {
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log.Error(icErr.Error())
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return 0
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}
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if ic {
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// in container, calculate by `cgroups`
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used, err := getContainerMemUsed()
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if err != nil {
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log.Error(err.Error())
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return 0
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}
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return used
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}
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// not in container, calculate by `gopsutil`
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stats, err := mem.VirtualMemory()
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if err != nil {
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log.Warn("failed to get memory usage count",
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zap.Error(err))
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return 0
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}
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return stats.Used
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}
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// TODO(dragondriver): not accurate to calculate disk usage when we use distributed storage
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// GetDiskCount returns the disk count in bytes.
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func GetDiskCount() uint64 {
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return 100 * 1024 * 1024
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}
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// GetDiskUsage returns the disk usage in bytes.
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func GetDiskUsage() uint64 {
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return 2 * 1024 * 1024
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}
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