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Add support for cpu hardcapping to cgroups.

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Docker-DCO-1.1-Signed-off-by: Rohit Jnagal <jnagal@google.com> (github: rjnagal)
Upstream-commit: 264dc8a46bb7f7679439d0a2c41c79a09642acab
Component: engine
This commit is contained in:
Rohit Jnagal
2014-04-24 14:43:02 +00:00
parent e8a3419885
commit 4a39371d62
2 changed files with 12 additions and 0 deletions
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2
components/engine/pkg/cgroups/cgroups.go
View File

@ -16,6 +16,8 @@ type Cgroup struct {
Memory int64 `json:"memory,omitempty"` // Memory limit (in bytes)
MemorySwap int64 `json:"memory_swap,omitempty"` // Total memory usage (memory + swap); set `-1' to disable swap
CpuShares int64 `json:"cpu_shares,omitempty"` // CPU shares (relative weight vs. other containers)
CpuQuota int64 `json:"cpu_quota,omitempty"` // CPU hardcap limit (in usecs). Allowed cpu time in a given period.
CpuPeriod int64 `json:"cpu_period,omitempty"` // CPU period to be used for hardcapping (in usecs). 0 to use system default.
CpusetCpus string `json:"cpuset_cpus,omitempty"` // CPU to use
UnitProperties [][2]string `json:"unit_properties,omitempty"` // systemd unit properties

10
components/engine/pkg/cgroups/fs/cpu.go
View File

@ -19,6 +19,16 @@ func (s *cpuGroup) Set(d *data) error {
return err
}
}
if d.c.CpuPeriod != 0 {
if err := writeFile(dir, "cpu.cfs_period_us", strconv.FormatInt(d.c.CpuPeriod, 10)); err != nil {
return err
}
}
if d.c.CpuQuota != 0 {
if err := writeFile(dir, "cpu.cfs_quota_us", strconv.FormatInt(d.c.CpuQuota, 10)); err != nil {
return err
}
}
return nil
}