34e7259f95
Collect historic cpu and mem stats. Also, use actual values instead of formatted strings while returning to the client. The string formatting prevents values from being processed by the server or by the client without parsing it. This change will allow the values to be processed (eg. compute rolling-average over the lifetime of the minio server) and offloads the formatting to the client.
68 lines
1.8 KiB
Go
68 lines
1.8 KiB
Go
/*
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* Minio Cloud Storage, (C) 2019 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* 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
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package mem
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import (
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"runtime"
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"time"
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)
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// historicUsage holds the rolling average of memory used by
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// minio server
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var historicUsage *Usage
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// memUsageMeasureInterval is the window of time between
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// two measurements of memory usage
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const memUsageMeasureInterval = 5 * time.Second
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// triggers the collection of historic stats about the memory
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// utilized by minio server
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func init() {
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historicUsage = &Usage{}
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var cycles uint64
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go func() {
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for {
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time.Sleep(memUsageMeasureInterval)
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currUsage := GetUsage()
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currSum := cycles * historicUsage.Mem
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cycles = cycles + 1
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historicUsage.Mem = (currSum + currUsage.Mem) / cycles
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}
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}()
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}
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// Usage holds memory utilization information in human readable format
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type Usage struct {
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Mem uint64 `json:"mem"`
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Error string `json:"error,omitempty"`
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}
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// GetHistoricUsage measures the historic average of memory utilized by
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// current process
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func GetHistoricUsage() Usage {
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return *historicUsage
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}
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// GetUsage measures the total memory provisioned for the current process
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// from the OS
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func GetUsage() Usage {
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memStats := new(runtime.MemStats)
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runtime.ReadMemStats(memStats)
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return Usage{
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Mem: memStats.Sys,
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}
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}
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