61 lines
1.9 KiB
Go
61 lines
1.9 KiB
Go
package configs
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import "fmt"
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// blockIODevice holds major:minor format supported in blkio cgroup
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type blockIODevice struct {
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// Major is the device's major number
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Major int64 `json:"major"`
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// Minor is the device's minor number
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Minor int64 `json:"minor"`
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}
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// WeightDevice struct holds a `major:minor weight`|`major:minor leaf_weight` pair
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type WeightDevice struct {
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blockIODevice
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// Weight is the bandwidth rate for the device, range is from 10 to 1000
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Weight uint16 `json:"weight"`
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// LeafWeight is the bandwidth rate for the device while competing with the cgroup's child cgroups, range is from 10 to 1000, cfq scheduler only
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LeafWeight uint16 `json:"leafWeight"`
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}
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// NewWeightDevice returns a configured WeightDevice pointer
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func NewWeightDevice(major, minor int64, weight, leafWeight uint16) *WeightDevice {
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wd := &WeightDevice{}
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wd.Major = major
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wd.Minor = minor
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wd.Weight = weight
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wd.LeafWeight = leafWeight
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return wd
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}
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// WeightString formats the struct to be writable to the cgroup specific file
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func (wd *WeightDevice) WeightString() string {
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return fmt.Sprintf("%d:%d %d", wd.Major, wd.Minor, wd.Weight)
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}
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// LeafWeightString formats the struct to be writable to the cgroup specific file
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func (wd *WeightDevice) LeafWeightString() string {
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return fmt.Sprintf("%d:%d %d", wd.Major, wd.Minor, wd.LeafWeight)
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}
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// ThrottleDevice struct holds a `major:minor rate_per_second` pair
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type ThrottleDevice struct {
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blockIODevice
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// Rate is the IO rate limit per cgroup per device
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Rate uint64 `json:"rate"`
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}
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// NewThrottleDevice returns a configured ThrottleDevice pointer
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func NewThrottleDevice(major, minor int64, rate uint64) *ThrottleDevice {
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td := &ThrottleDevice{}
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td.Major = major
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td.Minor = minor
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td.Rate = rate
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return td
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}
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// String formats the struct to be writable to the cgroup specific file
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func (td *ThrottleDevice) String() string {
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return fmt.Sprintf("%d:%d %d", td.Major, td.Minor, td.Rate)
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}
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