mirror of
https://gitee.com/milvus-io/milvus.git
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63 lines
2.1 KiB
Go
63 lines
2.1 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 hardware
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import (
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"strings"
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"github.com/cockroachdb/errors"
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"github.com/containerd/cgroups"
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)
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// inContainer checks if the service is running inside a container.
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func inContainer() (bool, error) {
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paths, err := cgroups.ParseCgroupFile("/proc/1/cgroup")
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if err != nil {
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return false, err
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}
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devicePath := strings.TrimPrefix(paths[string(cgroups.Devices)], "/")
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return devicePath != "", nil
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}
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// getContainerMemLimit returns memory limit and error
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func getContainerMemLimit() (uint64, error) {
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control, err := cgroups.Load(cgroups.V1, cgroups.RootPath)
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if err != nil {
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return 0, err
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}
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stats, err := control.Stat(cgroups.IgnoreNotExist)
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if err != nil {
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return 0, err
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}
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if stats.Memory == nil || stats.Memory.Usage == nil {
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return 0, errors.New("cannot find memory usage info from cGroups")
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}
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return stats.Memory.Usage.Limit, nil
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}
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// getContainerMemUsed returns memory usage and error
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func getContainerMemUsed() (uint64, error) {
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control, err := cgroups.Load(cgroups.V1, cgroups.RootPath)
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if err != nil {
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return 0, err
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}
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stats, err := control.Stat(cgroups.IgnoreNotExist)
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if err != nil {
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return 0, err
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}
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if stats.Memory == nil || stats.Memory.Usage == nil {
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return 0, errors.New("cannot find memory usage info from cGroups")
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}
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// ref: <https://github.com/docker/cli/blob/e57b5f78de635e6e2b688686d10b830c4747c4dc/cli/command/container/stats_helpers.go#L239>
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return stats.Memory.Usage.Usage - stats.Memory.TotalActiveFile - stats.Memory.TotalInactiveFile, nil
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}
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