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Fix CPU accounting

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Signed-off-by: Yann Ramin <atrus@stackworks.net>
This commit is contained in:
Yann Ramin 2018-01-07 18:19:11 -08:00
parent b4a469edfe
commit 10c5dbf061
2 changed files with 6 additions and 4 deletions
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8
lib/stats.go
View file

@ -16,7 +16,7 @@ type ContainerStats struct {
Container string
CPU float64
CPUNano uint64
SystemNano uint64
SystemNano int64
MemUsage uint64
MemLimit uint64
MemPerc float64
@ -38,6 +38,8 @@ func (c *ContainerServer) GetContainerStats(ctr *oci.Container, previousStats *C
cgroupStats := libcontainerStats.CgroupStats
stats := new(ContainerStats)
stats.Container = ctr.ID()
stats.CPUNano = cgroupStats.CpuStats.CpuUsage.TotalUsage
stats.SystemNano = time.Now().UnixNano()
stats.CPU = calculateCPUPercent(libcontainerStats, previousCPU, previousSystem)
stats.MemUsage = cgroupStats.MemoryStats.Usage.Usage
stats.MemLimit = getMemLimit(cgroupStats.MemoryStats.Usage.Limit)
@ -84,11 +86,11 @@ func getContainerNetIO(stats *libcontainer.Stats) (received uint64, transmitted
return
}
func calculateCPUPercent(stats *libcontainer.Stats, previousCPU, previousSystem uint64) float64 {
func calculateCPUPercent(stats *libcontainer.Stats, previousCPU uint64, previousSystem int64) float64 {
var (
cpuPercent = 0.0
cpuDelta = float64(stats.CgroupStats.CpuStats.CpuUsage.TotalUsage - previousCPU)
systemDelta = float64(uint64(time.Now().UnixNano()) - previousSystem)
systemDelta = float64(uint64(time.Now().UnixNano()) - uint64(previousSystem))
)
if systemDelta > 0.0 && cpuDelta > 0.0 {
// gets a ratio of container cpu usage total, multiplies it by the number of cores (4 cores running

2
server/container_stats.go
View file

@ -39,7 +39,7 @@ func (s *Server) ContainerStats(ctx context.Context, req *pb.ContainerStatsReque
},
Cpu: &pb.CpuUsage{
Timestamp: now,
UsageCoreNanoSeconds: &pb.UInt64Value{stats.CPUNano + stats.SystemNano},
UsageCoreNanoSeconds: &pb.UInt64Value{stats.CPUNano},
},
Memory: &pb.MemoryUsage{
Timestamp: now,