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Fix CPU calculation

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This commit is contained in:
Dane Everitt
2019-09-17 23:10:02 -07:00
parent 0b4816b46f
commit 2a745c5da1
2 changed files with 9 additions and 9 deletions
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13
server/resources.go
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@@ -32,15 +32,18 @@ type ResourceUsage struct {
// by the defined CPU limits on the container.
//
// @see https://github.com/docker/cli/blob/aa097cf1aa19099da70930460250797c8920b709/cli/command/container/stats_helpers.go#L166
func (ru *ResourceUsage) CalculateAbsoluteCpu(previousCpu, previousSystem float64, stats *types.CPUStats) float64 {
func (ru *ResourceUsage) CalculateAbsoluteCpu(pStats *types.CPUStats, stats *types.CPUStats) float64 {
// Calculate the change in CPU usage between the current and previous reading.
cpuDelta := float64(stats.CPUUsage.TotalUsage) - float64(previousCpu)
cpuDelta := float64(stats.CPUUsage.TotalUsage) - float64(pStats.CPUUsage.TotalUsage)
// Calculate the change for the entire system's CPU usage between current and previous reading.
systemDelta := float64(stats.SystemUsage) - float64(previousSystem)
systemDelta := float64(stats.SystemUsage) - float64(pStats.SystemUsage)
// Calculate the total number of CPU cores being used.
cpus := float64(len(stats.CPUUsage.PercpuUsage))
cpus := float64(stats.OnlineCPUs)
if cpus == 0.0 {
cpus = float64(len(stats.CPUUsage.PercpuUsage))
}
percent := 0.0
if systemDelta > 0.0 && cpuDelta > 0.0 {
@@ -48,4 +51,4 @@ func (ru *ResourceUsage) CalculateAbsoluteCpu(previousCpu, previousSystem float6
}
return math.Round(percent*1000) / 1000
}
}